Conversions

Advice on how to tackle a particular job - upgrading an exterior passage.

Anonymous user 28/02/2024 - 4.06 PM

Not sure where to post this but here goes! There is a passage between my house and the garage which needs upgrading - it measure 1.3m by 4.9m and I suspect that when the house was built (1960s) it was open to the elements. The passage has since been roofed over and there are wooden doors at either end but there is no form of insulation and it's very cold. There are also doors to the kitchen (recently replaced) and the garage. I'd like to make more of this space and try to increase the insulation which should then help to keep the rest of the house warmer. The difficulty is knowing how to tackle the work. The walls are brick (the wall of the garage is single brick with piers) and I'd like to have these boarded over with added insulation and then plastered. The ceiling would also need the same treatement. The floor is tiles on a concrete base and should be ok. There is a small amount of electrical work, as in moving switches etc. I'd also like to have the wooden doors replaced with something that requires little maintenance and will help to keep the cold out. I'm not intending to heat the space but hope the additional insulation will make it more useable. As the job seems to cover several different trades what's the best way of doing it? Am I best to have the doors replaced before doing the plasterboarding or the other way round. Ideally I would like to have someone do the whole job but is this a non-starter? Any help appreciated.

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The roof insulation needs to be topped with either PIR or rockwool slabs Insulation 150mm and have a minimum 25mm airgap above for condensation between the insulation and breathing membrane. The garage wall and any side single walls around openings we advise stud sacrificial wall with minimum 100 thermal insulation. If the space is used as a living space we would advise adding insulation to the floor too. New doors we advice UPVC or composite plastic , if glazing wanted in them they need to be double glazed with agon gas within.

Answered23 January 2023

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Anonymous user

There are many options as far as insulation backed plasterboard coming in different thicknesses and quality of insulation material. I would suggest an air gap using timber batten or metal stud on a single skin brickwork. Having upvc doors fitted will solve your problem with maintenance and keep the cold out better than timber doors. For a general Builder this is a relatively small and simple job

Answered23 January 2023

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