Waterproof

I have taken the old rendering off my outside wall back to the breezeblock. Will it be waterproof for a while

Advice from 25 local tradespeople

Yeah be still waterproof

No get something on it before the cold hits

I would recommend brushing over the block work with a water seal if you intent to leave it for a long period or if you’re expecting rain, breeze blocks are not waterproof and would allow moisture and small amounts of water to pass through.

It will be OK but needs to be rendered as soon as possible

No

As long as the joints on the blockwork is full so no water can ingress

Yes if it’s properly installed. Won’t be keeping for long though

You would be best to recover it asap however if it a cavity wall construction you will be ok in the immediate term

No as render would have made it sweat and be damp

The block work will be fine for a while but I would suggest getting it re rendered or possibly painting but just make sure there is no wholes in the joints or blocks as water can get into the cavity and travel threw internal walls

If the breeze blocks have been painted or covered over you are okay, but if it not then no it wont be waterproof and you will need to re-render it or plaster it again.

breeze blocks are very pourous and will absorb moisture and water . do not leave unprotected for long as will cause damp to grow inside the dwelling not outside . suggest you cover with plastic until u can redo the render on the outside or paint the breeze blocks with water proof bitumen tar paint

The concrete blocks are not waterproof, so if you have removed the old rendering and have not applied a new layer of waterproofing material, your wall will not be completely waterproof.

Rendering acts like a raincoat to the exposed blocks and what is crucial to understand for any exterior surface, but especially the highly porous breeze blocks, is that moisture is not allowed to absorb into the substrate, which will cause damage not only to the paint work but to the material itself.

The more they are exposed to elements the more they will degrade overtime.

I would highly recommend you speak to a qualified and knowledgeable builder about reapplying render to the property sooner than later after old removal to minimise property damage and further protect your house.

Yes but if the brick work is poor then no there possibility a chance water/damp could make it’s way through

It would be better if you could spray a water seal as the mortar may be very dry and soak up water. I would do this either way

No

Yes, it will be waterproof

Yes it’ll be fine but it’s not ideal.

No, breezeblocks are not waterproof and hold a lot of moisture which will lead to damp problems on the interior. They will need to be re rendered or cladded to avoid this.

Depending on if any block are damaged or not.

No

No

Hi, yes of course block work is water resistant to a extent but would need time to dry through before re-rendering otherwise the new render would not take and start to come away from the block work rather quick.

Yes it should be aslong as as its all pointed sealed and water tight

Compare quotes from locally reviewed bricklayers

It's free and there's no obligation to hire.

Compare quotes from locally reviewed bricklayers

How it Works

step1
Step 1
Post a job for free
step2
Step 2
Tradespeople Reply
Medal
Step 3
Review profiles & Choose