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one of the first jobs is to brick the steel beams into the walls, the whole new floor is suspended from these so no extra load is put on your original upstairs ceiling.
The floor joists can now be hung from the steel beams. Floor joists used are around 175mm(7") deep by 50mm(2") - 75mm(3") thick depending on the length used.
After the floor has bean insulated and the boards fitted, part of the roof is removed to accommodate the dormer, the new dormer frame is now erected. This is usually a hectic day as there is a lot to do and the job must be left weatherproof for the night.

The dormer shell finally water tight so we can go home and finnish off tomorrow.

Looking from the outside as we leave for the evening.

Everything sheeted over and fastened down for the night.

Our brickie Rob is well on the way with, in this case the brick skin.

After this the windows and roof can be sorted out.

Once the roof and windows are fitted, the inside is insulated using Kingspan insulation boards or similar and finished with plasterboard. all the Electrics and plumbing is done ongoing and finished at the end.
To Kingspans site
The exterior finished using brick
Another more typical white uPVC finish
To Celotex site
How it's Done

week before start date scaffold is erected

on the first day an access point is made in the roof where any steel beams and all the floor timbers are fed into the attic.

Many of the conversions require at least 1 steel girder to support the new floor area, to comply with building regs this must be an independent floor made from much larger wood joists than is currently holding the ceiling up, this after all is going to be a third floor, not just an attic storage area.

This page will give you a brief but informative description of how we go about a conversion, all conversions have their own set of hurdles to get around so every job is different, in general the main bulk of the conversions are constructed the same.

Before a conversion is started physically, we start gearing up to begin, this will involve getting the scaffolding in place, arranging an initial visit from the building inspector to go through the finer points and iron out any problems in advance and of course order the first batch of materials for delivery on the start date, this usually happens during the final week of our current conversion.

 

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Loft Conversion Specialists