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3 Structural questions about your extension answered

Insulation

Your loft conversion will be insulated in one of two ways; the ‘cold roof‘ method or the ‘warm roof‘ method.  The cold roof method consists of using compressed foam slabs that can be cut down to the appropriate size. The same material will be used in the rafters to give a total of 10cm of insulation with a gap to allow air to flow freely through the soffit or fascia vents.  The roof can either be insulated with rock wool or the compressed foam and your project manager or architect will know the appropriate thickness of insulation that’s required for your project.

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The warm roof method is mainly used for dormer extensions as it requires for the roof to have been stripped back or built after. You can use the compressed foam on the outer part of the building but on the inside you will use rock wool in-between the timbers that’ll eventually end up behind plasterboard.

 

Windows and lighting

The most common window that you’ll find in an extension is a roof window.  These windows follow the angle of the roof and are easy to fit.  By removing tiles and the batons you create a space you solidify up with timber creating the frame for your roof window.

People immediately think of installing a standard window into extension as this will keep in with the pattern of the house and you can design it to add symmetry to your build.

If your extension is in a space which is only accessible by a single set of stairs you will have to install an escape window which will allow you to open the window wide enough to allow you to vacate the building in the event of a fire.  The sill of this window must not be taller than 1.1m from the floor.

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Is it worth it?

Adding an extra bedroom or bathroom can increase property value but 15-20%. So it’s an immediate investment and it makes more sense to extend rather than move if it’s for the sake of an extra room.  Typically you can expect to pay just over £1000 per square meter of space you are converting which sounds outrageous – but on average you end up only paying 12% of the 20% that will be an increase in property value.  So financially it makes sense. ‘Don’t move, improve’.

You must also consider the value when it comes to the improvement of your everyday life.  Adding extra bedrooms, bathroom’s or living/reception rooms greatly add space to your home and allow that extra place of escape for your family member or guest which subconsciously increases the space gained even further.  These are actually the same rooms which add more value financially to your property also.

Working closely with your project manager/architect will allow you to maximize the potential of your property.

 

 

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