Blistering Paintwork

Understanding the Causes of Blistering Paintwork on a Plastered Wall

Blistering paint on a plastered wall
Blistering paint and other paint issues on plastered walls can be caused by various factors, from moisture to improper surface preparation.

Have you ever noticed those paint issues such as unsightly bubbles forming beneath the paint on your plastered walls? It’s a frustrating sight, especially after putting in the effort to paint them. Blistering paintwork can ruin the aesthetics of your walls and leave you wondering what went wrong.

Understanding What Causes Blistering Paint

Moisture Infiltration

One of the primary reasons for blistering paint is moisture seeping through the plaster. Whether it’s from cracks, leaks, high humidity, or inadequate waterproofing, moisture can wreak havoc on your paint job.

Poor Surface Preparation

Rushing through the surface preparation phase can lead to adhesion issues between the plaster and paint layers. Failure to clean, sand, or prime the surface adequately prevents the paint from bonding securely, resulting in blisters.

Low-Quality Paint or Primer

Using subpar paint or primer products might save you money upfront but could cost you dearly in the long run. Inferior formulations are more prone to blistering, especially when applied to plastered walls.

Paint Application in Extreme Conditions

Painting in extreme temperatures or direct sunlight can impact the paint’s ability to adhere properly to the plaster. Similarly, applying paint to damp surfaces or during high humidity levels can lead to blister formation.

Treating Blistered Paint on Walls

Painting over the Blistered Paint on Walls

While you can paint over blisters, addressing the underlying issues is crucial. Ignoring them may lead to recurring problems. Sand the affected areas, repair any damage, prime the surface, and repaint for a lasting solution.

Preventing Blistering Paint on Plastered Walls

Ensure proper surface preparation by cleaning and priming the walls before painting. Use high-quality paint and primer suitable for plaster surfaces. Additionally, address any moisture issues promptly to safeguard against future blistering.

Quick Fixes for Blistering Paint

Quick fixes such as puncturing the blisters and applying a new coat of paint may offer temporary relief but are not advisable. However, to prevent recurrence, it’s essential to identify and rectify the root cause of the blistering.

Address the issues to prevent blistering paint.

Blistering paint on plastered walls can be a frustrating setback, but understanding its causes is the first step toward effective resolution. By addressing issues such as moisture infiltration from cracks, rising damp, falling damp, penetrating damp, inadequate surface preparation, and using quality materials, you can achieve a flawless finish that stands the test of time. Remember, a well-executed paint job not only enhances the aesthetics of your house but also protects your walls from damage. Take the time to tackle the problem at its source and enjoy walls that exude beauty and durability for years to come.

A Maintenance Home Inspection will help solve many issues you may have in your home with cracking, paint issues and leaks. You get a comprehensive inspection and report with photos which will highlight the maintenance issues you should take care of.

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THE HOME DETECTIVE » Homebuyer

Pre-listing Home Inspection & Report ( Seller’s Disclosure)

About Pre-listing Home Inspections

A Pre-listing Home Inspection and Report include the really important parts of the home! It is a critical or “Safe Home” inspection.

This inspection is an ideal inspection for sellers because it is the “Seller’s disclosure“.

With a Pre-listing Inspection, I focus and report on the critical components of a home which are the roof, roof space, structure (inside and outside), windows and doors, electricity and plumbing installations, and any damp problems!

Therefore, a Pre-listing Inspection is ideal if you only require an inspection of the major components of the home. Besides, it is more affordable!  My fee for a Pre-listing Home Inspection report is about 75% of the cost of a Comprehensive Inspection, depending on the distance I would need to travel to the property.

What does a Pre-listing Inspection include

It may include structural cracks in walls, ceilings, and floors. Issues such as dampness, roof leaks, illegal or unsafe geyser installations, and window and door issues. However, I only inspect the external and internal wall, floor, and ceiling finish for signs of structural issues, dampness or damage from moisture intrusion.

Electrical and gas installations are also part of a Pre-listing Home Inspection. I inspect and report on stoves, air conditioners, and other built-in appliances. Plug points, light fixtures and switches are also checked. Moreover, I report on surface drainage, vegetation, and foliage issues that may affect the structure and roof adversely.

Besides the geyser installation, I check the water supply to all other plumbing fixtures and fittings as well as the drainage from them. I report on all leaks or faults observed during the Pre-listing Home Inspection.

A Pre-listing Inspection includes unsafe, functional, or structural issues which, in my opinion, require prompt remedial attention. Furthermore, I report on preventative remedial actions that are required to preserve the safety, functionality or structural integrity of the home or major installation.

What is not included

Other external elements such as boundary and yard walls, the site, driveways, walkways, garden sheds, etc. do not form part of the Pre-listing Inspection.

In addition, I inspect walls, floors, and ceilings for damp and structural issues only! I also inspect BICs, sink and kitchen cupboards, and counters for moisture intrusion only.

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THE HOME DETECTIVE » Homebuyer

Cavity Walls In New Buildings In South Africa

SANS 10400-XA (Energy Usage in Buildings)

The 2021 SANS 10400-XA revision requires the construction of cavity walls in place of 230 mm solid brick external walls. This energy-saving change is applicable in all the energy zones in South Africa except in zones 3, 5 and 5H.

How wise this course of action is considering the lack of skills in the building trade will have to be seen!

What is a cavity wall?

A cavity wall consists of two skins separated by a hollow space (cavity). The advantage is that a cavity wall gives better thermal insulation than a solid wall. The space between the two leaves of cavity walls reduces heat transmission into the building from outside.

The following are the advantages of cavity walls when compared to solid walls.

  • This type of wall gives better thermal insulation than solid walls.
  • The hollow space between leaves prevents moisture penetration through the wall from the outside. This prevents dampness internally.
  • They also act as good sound insulators.
  • These walls also prevent efflorescence from occurring.

Construction of cavity walls

how to build a cavity wall using DPC and brickforce
window built in on a cavity wall with vertical DPC

The construction of these walls is technically more difficult than for solid 230 mm walls.

  • The cavity between the two masonry leaves should be a minimum of 50 mm. The gap must be consistent from the bottom of the wall to the top.
  • Below the DPC level, the bricklayer must fill up the wall cavity with concrete or mortar before installing the DPC.
  • The bricklayer then installs the DPC at slab level to step down from the slab-level interior wall across the cavity to the outer wall and weep holes. Its purpose is to drain away any water in the cavity towards the weep holes to discharge it outside.
  • Weep holes must be provided in the external leaf above the Damp Proof Course (DPC) at every 4th brick horizontally.
  • The bricklayer must build in wall ties at every 5th course of brickwork vertically and space them horizontally at every second brick to tie the two leaves of brickwork together.
  • Mortar dropping down in the cavity can stop water from draining away. The bricklayer should leave some bricks out temporarily at the DPC level to clear mortar droppings at the end of each day’s work.
  • The normal method of preventing mortar droppings from falling to the base of the cavity is to use a cloth-rapped batten (38 x 38 mm) or specially sized 50 x 38 mm planed to 45 mm. The bricklayer places the batten on the wall ties while building the wall. The bricklayer raises the batten, using wire tied to its ends and then positions it on the next row of ties.
  • Furthermore, the bricklayer should install a vertical DPC on the sides of doors and windows when closing off the cavity wall. This is to prevent water from driving to the inner face.
  • In addition, the bricklayer should install a layer of DPC and weep holes in the cavity above exposed doors and windows similar to the DPC at floor level. This is to prevent moisture from penetrating the inner leaf.
  • At the roof line, the bricklayer should fill or brick up the cavity for two or three courses below the roofline to stiffen and distribute the load over both leaves. He should also build in roof ties at this level to tie down the roof trusses or beams.
  • No wide brick force can be used to span both leaves and cavities of brickwork. A 90 mm width of brickforce will need to be used on every 5th layer of brickwork on both leaves up to window or door height and every course above that until the cavity is closed at roof height.

My Concerns with the new requirements

The Western Cape Province has already been following this practice for many years. Cavity walls are also better for damp prevention than solid walls. The introduction of cavity walls nationally is to satisfy regulatory requirements for building energy efficiency.

However, such sweeping changes to the construction of brick buildings in other areas of the country may have serious consequences because of skills shortages. They may lead or may have led to substandard work because of the lack of sufficient skills and training of bricklayers and their supervisors!

The newer generation of bricklayers and builders never adhered fully to the requirements of the building regulations before with the construction of solid 230 mm walls! Most of them have had no experience with building cavity walls either!

I have listed some of the issues I have seen on building sites below:

  • In my experience, the bricklayers in the building trade never used collar jointing of the solid brick walls leading to weakened wall structures.
  • The bricklayers seldom place the DPC on a half layer of mortar on the brickwork. Instead, they place the DPC directly on the brickwork. This often led to moisture intrusion in the structure at the DPC level.
  • Generally, no bricklayer has installed DPC on the sides or above the door and window openings to prevent moisture intrusion through the wall at the windows and doors inland from the coastal areas.
  • Few bricklayers build in the correct number of layers of brickforce reinforcing above windows and doors.
  • Often, the bricklayers tooth the brickwork of the internal walls to external walls and corners instead of stepping back the brickwork as required.
  • The mixing of large amounts of mortar resulting in the retempering (adding additional water) of mortar is a common practice. This causes weakened mortar and brickwork.

Most of the issues result from a lack of knowledge and training. This includes not only the bricklayers but also the supervisors!

So how do we get the bricklayers to build the more technical cavity walls correctly?

  • One way is to train the supervisors who in turn can train the bricklayers!
  • Various brick associations and training schools offer bricklaying training. The various training associations and schools may be open to do on-site training.
  • Both the supervisors and the bricklayers can learn from videos that show how to build cavity walls. They all have cellphones on which they can view the videos.
  • Articles by the Clay Brick Association can update supervisors and bricklayers with the technicalities of building a cavity wall.

Let us hope the above happens so that new homeowners will have properly constructed homes!

Conclusion

With the correct training, newly built cavity walls will provide the thermal benefit required by the new revision of SANS 10400-XA. In addition, the construction of cavity walls will minimise moisture intrusion into new buildings if constructed properly. They also provide sound insulation benefits.

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THE HOME DETECTIVE » Homebuyer

Don’t Skip Your Home Inspection

Why Skipping a Home Inspection Can Cost You Thousands

At some point, you may be considering purchasing a new home and the question of whether to get a home inspection might cross your mind. You might think that skipping a home inspection can save you money. In reality, it can cost you thousands in repairs in the long run. A home inspection is a crucial step in the home-buying process! A home inspection can help you avoid potential pitfalls, identify hidden problems, and negotiate better terms with the seller. Read why skipping a home inspection can be a costly mistake, and how it can affect you and your investment.

The Risks of Skipping a Home Inspection

Skipping a home inspection can lead to several risks that can affect your investment. One of the most significant risks is the potential for hidden problems that can be expensive to repair. With the “Voetstoots” clause in most preowned house sales, you are at risk! Without a home inspection, you may not know about any defects, building regulation violations, or safety hazards. This may lead to costly repairs! Additionally, without a home inspection, you might miss out on important details about the home’s condition. This includes systems such as the age of the roof, plumbing and electrical systems or the foundation. These systems can also impact the value of the property.

Another risk of skipping a home inspection is the potential for legal and financial liabilities. If you purchase a home without a home inspection and later discover significant problems, you may be held liable for the costs of repair. Furthermore, if you decide to sell the property without disclosing the defects, you could face legal consequences and even lose your investment.

The Benefits of Getting a Home Inspection

On the other hand, getting a home inspection can help you avoid these risks and provide you with several benefits. One of the main benefits of a home inspection is that it can identify any defects or issues that you may not be aware of, which can help you negotiate with the seller for better terms. Additionally, a home inspection can help you plan for any future maintenance or repairs that may be necessary. Regular maintenance will save you money in the long run. A good reason for not skipping your home inspection!

Furthermore, a home inspection can provide you with peace of mind, knowing that you have a home inspection report of the home’s condition. The report will include the property’s strong points and any suggestions for repairing the defects of the property. Regular maintenance is a feature of any property! The report will give you a good idea of the maintenance you may need to undertake. Additionally, a home inspection can help you avoid surprises after the purchase, reducing the stress and anxiety associated with buying a new home.

Conclusion

In conclusion, skipping a home inspection can be costly! It can lead to hidden problems, legal and financial liabilities, and reduced property value. Getting a home inspection, on the other hand, can provide you with several benefits. These include identifying defects, negotiating better terms with the seller, planning future repairs, and providing you with peace of mind. Therefore, I recommend that you always get a home inspection before buying a property to ensure that you are making a sound investment.

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Imagine What Can Happen If You Don’t Have A Home Inspection!

home inspection and property inspection
Do not let this happen to you! Be wise! Rather have one of my property inspections like a Comprehensive or Critical Home Inspection in Gauteng or part of the North West province!

Why use THE HOME DETECTIVE for your home inspection?

Firstly, you get the best home inspection and most detailed home inspection report in Gauteng! You not only get a defects report but you also get a property inspection report detailing future maintenance issues! Moreover, my inspection reports include advice for repairs and maintenance which is helpful if you are a DIY enthusiast or handy around the house! 

Secondly, your inspection is performed and the report is produced by a highly qualified and Certified Professional Inspector (CPI) who is a member of the International Association of Certified Home Inspectors (InterNACHI)!

Moreover, I come highly recommended on Google Business!

There is no doubt that without a home inspection and report, you are at risk! This is especially true with the “Voetstoots” clause in the “Offer to Purchase“!

At The Home Detective, I understand just how stressful it can be to buy a new home. A home is not just what it appears to be on the surface. It can consist of more than 500 different components, some of them very complex. This includes the roof, windows, doors, structural concrete, brickwork, framework, and components such as electrical, plumbing, cooking, heating, and air conditioning systems.

When considering a home for purchase, minor cosmetic repairs are usually acceptable. However, you need to make sure that everything beneath the surface is in good shape.

How I can help you

I will help you reduce your stress and uncertainty when you are looking for a new home. I will help you choose the right property. My Comprehensive or Critical Home Inspection will help reduce the risk of buying a house with structural defects, leaks, dampness and other defects.

Furthermore, I work only for you! My home inspection services give you unbiased, objective information about the property. Above all, I am an independent and impartial home inspector.

In addition, a comprehensive or critical home inspection and report is not going to cost you an arm or a leg! Don’t let the home inspection cost put you off! It may cost a bit, but it could end up saving you many thousands in repairs and maintenance!

My inspection services for your peace of mind

You don’t need to attend the inspection if you do not wish to. Your inspection report with marked-up photos of the defects will clearly illustrate the condition of the home to you. However, attending the home inspection will give you more insight into the property. In addition, you will also be able to raise concerns while I am inspecting and have your questions answered.

Your comprehensive home inspection report will include:

  • Defects of the property and suggestions for repairing them
  • The property’s strong points,
  • Regular maintenance is a feature of any property. The report will give you a good idea of the maintenance you may need to do.
  • For ease of understanding the inspection report will include photographs. I am also happy to give telephone support if required!

Why choose The Home Detective?

At The Home Detective, I strive to ensure my home inspection services and reports are not only the best in Gauteng but are the best in the business. I value customer service above everything else.

I use the latest home inspection technology and equipment. Therefore, you can rest assured that you’ll receive a thorough and detailed property inspection service you won’t find elsewhere!

In addition, I inspect properties in Gauteng from the north of Pretoria to Johannesburg South and from Brits in the Northwest Province to Springs in the east.

All my inspections exceed the minimum requirements of InterNACHI’s Standards of Practice and I observe InterNACHI’s Code of Ethics.

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THE HOME DETECTIVE » Homebuyer

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