Shown here are photos of St Josephs primary school which had 110mm of Sto external insulation fitted. A 6mm tinted white finish render was used to replicate a dashing effect with grey tinted band and window reveals. The window reveals on this project were a tricky detail and one that is not seen often on externally insulated render systems.

There were numerous windows on this school and all details had to kept sharp. The projection was to be 20mm on each window.

The greatest challenge was the weather, there was a little frost at night and daytime temperatures were often low. We had the scaffolding completely covered in which provided protection from the elements and when the heaters were running, it was quite cosy.

Details at corner here show the facia and soffit and also the band.

Panel between windows is in 6mm white textured render with 1.5mm tinted grey reveals and band above.

The front of the building faced north and never saw the sun during the day. With the heaters running beneath the canopy the temperature was kept well above the required 5 degrees needed for these acrylic renders.

Perhaps the most difficult part of this project was to externally insulate the old concrete facia and soffit, this was not only a huge cold bridge but, was in very poor condition and not running true.

Ken O’Brien Carpentry – Carpenter, Builder, Roofer.. available in Wicklow/Dublin.

Contact us now for a free quote.

External wall insulation is a cladding system, which wraps the entire house in suitable insulation and covers it with a water proof coating. Here shows a house being wrapped in expanded polystyrene.

This is not only the most efficient way to insulate a building but, also gives a crisp, smart and completely maintenance free finish to your home.

External wall insulation uses the fabric of the building like a storage radiator. Heat can no longer escape through the outer layer of insulation and is reflected back into the living areas, creating a constant warm home.

The main benefits of external insulation are:

* Reduced heating bills

* Internal living space unaffected.

* Reduces cold bridging

* Improves the airtightness of a property

* Eliminates cold and damp from poorly insulated walls.

* Improves a property’s BER rating.

* Improves structural stability through protection.

* 800 colours and brick finishes available.

How is External Wall Insulation applied ?

The required type and size of insulation is calculated. The window sills and reveals are removed to eliminate cold bridging. The insulation panels are then adhesively fixed to the walls. The boards we use are tongued and grooved to help keep them straight and plumb.

The boards are then mechanically fixed to ensure stability.  We use not only thermo dowells to fix the boards but also use a dowell cap for greater  thermal bridging. A mesh and plaster base coat is then applied to the boards.

An aluminium sill or a Deco Plan board is used to replicate concrete sills. The finished render system, which has 800 possible  colours is then applied.

Shown here are some photos of the finished job

Ken O’Brien Carpentry – Carpenter, Builder, Roofer.. available in Wicklow/Dublin.

Contact us now for a free quote.