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Celotex Wall Applications

1 Insulation for timber frame wall lining

So What do I use?


Typically you would use around about 70mm of insulation on your walls to achieve current regulations. For an accurate idea use the U value calculator . If you simply want to improve the insulation in your house we wouldn't recommend much below 40mm.

The easiest way to achieve this with a timber frame wall lining is to to put in 50mm between the frame and 20mm boards over the face to stop cold bridging through the wood. This solution provides for the thinnest build-up with the better thermal insulation. Where the insulation is coming into contact with cold surface such as outside tiles etc a 50mm air gap should be left.

The second option is to use mineral wool batts fitted between the studs, followed by an internal lining of Celotex T-Break TB4000 over the studs.

This solution gives a thicker build-up but offers improved acoustic insulation. For High density mineral wool bats you can visit our sister site Souundstop which offers practical guide to sound proofing and where you can buy high density mineral wools

If you wish to buy these products jump straight to the store. Remember delivery is free over £250 (plus Vat) and we support a number of charities.

http://www.celotex.co.uk/downloads/TimberFrameWallLining.pdf

ZGA3020

 

 

* This is the maximum discount achievable if you buy in bulk. Discounts calculated automatically.
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Product Name Size Unit Price Multi-Buy Price* Qty. SubTotal Final Price Ex VAT Discount %
  £0.00
 

2 Insulation for solid masonry wall insulation

So What do I use?

Many older properties are constructed with solid masonry walls which provide poor levels of thermal insulation.

These walls can be successfully insulated by incorporating Celotex insulation as part of an internal lining system or an external render system. The simplest solution is the use of Celotex PL4000 boards.

These boards can be affiexed with dot and dab Dry wall adhesive . Typically 1 bag does 2-3 boards.

The internal lining system creates internal wall surfaces with low thermal mass. These will rapidly respond to changes in heat input and this system may be beneficial where a building or room is only occasionally heated.

Conversely, the external render system creates internal wall surfaces with a high thermal mass. These will respond relatively slowly to changes in heat input and this system may be preferred for buildings with continuous occupation.

In both systems, the low thermal conductivity of Celotex insulation permits the upgrading of older buildings to current insulation standards with minimal increase in wall thickness.

See installation guide for more details

http://www.planetinsulation.co.uk/ZPL4025.php

ZPL4025

 

 

* This is the maximum discount achievable if you buy in bulk. Discounts calculated automatically.
Click on any underlined product name to link to a full product detail page.
Product Name Size Unit Price Multi-Buy Price* Qty. SubTotal Final Price Ex VAT Discount %
 Dry wall Adhesive (25kg Bag) 25kg £10.75 £10.32 
£0.00 £0.00 0.00 %
  £0.00
 

3 Masonry cavity wall insulation

So What do I use?

For most of the past century, external masonry walls have been predominantly of cavity construction. A cavity provides an effective barrier to rain penetration and also adds to the thermal resistance of the wall.

These walls can be successfully insulated by incorporating Celotex insulation as part of an internal lining system or an external render system. The simplest solution is the use of Celotex cavity boards.

Modern energy conservation requirements demand added thermal insulation in external walls, and the cavity offers the most obvious location for the insulation. However, full cavity fill may reintroduce the risk of moisture penetration and many designers, especially when considering exposed sites, prefer to specify partial-fill insulation.

For partial-fill design to achieve high standards of insulation without a massive increase in the width of the cavity, and of the overall wall thickness, highly efficient insulation must be used

See installation guide for more details

http://www.celotex.co.uk/downloads/MasonryCavityWalls.pdf

 

celotexcavity1

 

 

* This is the maximum discount achievable if you buy in bulk. Discounts calculated automatically.
Click on any underlined product name to link to a full product detail page.
Product Name Size Unit Price Multi-Buy Price* Qty. SubTotal Final Price Ex VAT Discount %
 Pack of Celotex Cavity Board 50mm CW4050 pack of 11 cover 5.94m2 1200mm*450mm £55.75 £51.85 
£0.00 £0.00 0.00 %
 Pack of Celotex Cavity Board 60mm CW4060 pack of 10 covers 5.40m2 1200mm*450mm £60.16 £55.95 
£0.00 £0.00 0.00 %
 Pack of Celotex Cavity Board 75mm CW4075 pack of 8 covers 4.32m2 1200mm*450mm £60.16 £60.16 
£0.00 £0.00 0.00 %
 Pack of Celotex Cavity Board 100mm CW4100 pack of 6 covers 3.24m2 1200mm*450mm £58.61 £54.51 
£0.00 £0.00 0.00 %
  £0.00
 

4 Steel stud framed wall insulation

Historically, the use of steel framed walls has been found mostly in the construction of commercial buildings

However, the recent growth in Modern Methods of Construction (MMC) has seen an increase in the popularity of lightweight steel framed buildings for both commercial and residential developments. The offsite pre-fabrication of framed panels allows rapid, accurate construction on site.

To minimise building heat losses, rigid thermal insulation is placed on the outside of the frame as a continuous layer to eliminate thermal bridging through the metal studs. This is known as 'warm frame' construction. The very low thermal conductivity of Celotex tuff-R GA3000 enables high levels of insulation to be achieved with minimal overall thickness.

See installation guide for more details

http://www.celotex.co.uk/downloads/SteelStudFramedWalls.pdf

5 Timber frame wall sheathing

It is now widely recognised that, in highly insulated framed structures, the thermal bridging effect of the timber frame itself becomes significant.

Solid timber, in the form of studs, lintels, head rails and sole plates, as well as intermediate floor joists and trimmers, usually accounts for more than 20% of the external surface area of the building. Therefore, often less than 80% is actually insulated.

As demand for higher standards of insulation grows, the space between the studs becomes the limiting factor; the timber itself acts as a thermal bridge and the cost of increasing timber sizes to allow more insulation to be added is disproportionate to the improvement achieved.

Because of these thermal bridging problems, it is now clear that higher U-values can only be achieved by fixing the insulation on the outside of the frame, and covering the entire surface, both voids and studs. The insulation is much thinner, leaves the voids between studs free for services and eliminates the risk of interstitial condensation within the frame completely. No internal vapour check is necessary.

The insulating sheathing approach has now been universally adopted for steel-stud framing systems because it eliminates thermal bridging.

See installation guide for more details

http://www.celotex.co.uk/walls/sheathing.php