FAQ

  Exterior Rendering Questions

Can you patch and repair my existing pebble dash or tyrolean?

No. We only use the latest polymer renders which are nothing like the traditional dash or stucco finishes in appearance or characteristics so we can only do full walls.

What surfaces are suitable for your rendering?

We can render onto most surfaces and in particular brick,stone,block,painted renders and dashes and some types of external weather boards and polystyrene BEKO type blocks.

Does my existing pebble dash or render need to come off before it is re-rendered?

If the majority of your current rendering is securely adhered to the wall then it is best to just cut back and repair the blown areas. The sound cement rendering can then be meshed and pinned back to the wall during the re-rendering process to ensure it remains permanently anchored to the wall.

To forcibly remove securely bonded rendering from a wall often causes quite a bit of unnecessary damage to the bricks and pointing beneath the render so it is usually best to leave this in place and secure with the mesh and pin system.

Will going over existing rendering cause trapped moisture or damp problems?

We only use breathable renders to prevent this from happening. If the existing rendering has been heavily painted over the years the we scutch the wall to break up the paint layers as part of the preparation process. Also the drilling every 2 square feet for the pins also punctures the rendering and enables the wall to breathe further.

If you leave existing dash or tyrolean on the wall is it guaranteed along with the new render?

Yes we guarantee the existing render since we only leave it on if it is soundly anchored and then we also mesh and pin it every 2 square feet as well!

My house is timber framed. Can you still render it?

Since we only use breathable renders that are flexible and crack resistant there is no issue dealing with a timber frame structure.

What is your exterior render guaranteed against and for how long?

We issue a 15 year warranty covering the workmanship and the materials. We guarantee the new rendering will not peel,crack or come away from the underlying wall and this includes any existing pebble dash etc that we have meshed and pinned.

What finishes are available in terms of colour and texture?

The finish comes in a light texture or a more pronounced heavier texture finish and due to the glass fibre content of our base coats there is not a smooth plaster flat finish available.

There is a wide choice of standard colours but we can supply bespoke colours if required.

 

Questions about Damp Walls

 

I am not sure what is causing the damp in my walls,can you arrange a survey?

We are not expert in diagnosing damp causes so you would need to use a damp survey company for this. We can help cure the damp problem once it has been correctly diagnosed.

I have penetrating damp in my walls can you help?

Penetrating damp is quite rare and is often mis-diagnosed when the cause is really condensation damp.

If you are certain it is penetrating damp then our range of extreme weather-resistant renders will stop driven rain from penetrating and we also offer a clear coat for brick or stone walls when rendering is not an option.

Will your render not trap the damp in the wall?

Our renders are micoroporous which means they stop the water from entering the wall but allow moisture from the inside to escape. Therefore they will allow the internal wall to dry out whilst keeping the outer wall dry

Will rendering stop mould and condensation damp?

Whilst rendering will keep the wall dry and therefore raise the core temperature you may still need to use an insulation render to guarantee the condensation will completely disappear.

We recommend that ensuring good ventilation and a constant room temperature are tried first as a cure for condensation before going to the considerable expense of insulating or standard render.

I am not sure if I have rising damp or condensation/penetrating damp?

Rising damp cannot really get any higher than a metre up the wall from ground level unless it is pressurised water from  a very high water table or you are in a flood plain. So,if the damp is at ceiling height or on the first floor it cannot be rising damp.

If the damp is within a metre of the ground level then it could be any of the above so you should call in a damp specialist.

 

 

How thick is a typical insulation system?

In most instances a depth of 100mm (or 4 inches in old money) comprising an insulation board and a colour render finish will deliver a high enough thermal gain to meet Building Regs and any free grant criteria.

You can have a thicker or thinner board of course but once you drop below 60mm on any of the boards you will not hit the Building Regs or the free grant criteria.