insulation

Hi all, I wonder if anyone can advise. We bought a 1930s property and decided to sleeve off/bridge the airbricks that were already there to ventilate the underfloor. I heard that the cavities need ventilation too? Will bridging the airbricks afect the cavities? We are planning on installing...

Hello. I'm about to convert my garage into a habitable space (not moved in yet, but have exchanged contracts). It’s a single skin thermalite block construction, and rendered on the outside, plastered on the inside. The main issues will be solving a small patch of damp (see photo) and sorting...

Hi. Quick question: I have rigid insulation upstands around the concrete slab in my extension, and am using self-levelling compound on it before laying engineered wood. Do I trim the insulation and level over it (creating a thin cold bridge to the masonry/bifold frame) or level first and trim...

I’m in the process of boarding my loft, which includes replacing all the insulation. As I pulled up the first-laid layer that runs along the joist pathways, I’ve found a bunch of slate and rubble. It looks like someone redid the roof, let the old one just fall into the loft space, and then...

My first post on the forums after lurking for a while. I've just moved into a new house and peeked my head in the loft to find the insulation setup is different to what I've seen before. As well as just 100mm between the joists (that I'll be adding more to soon), there's a line of insulation at...

So we've had the hall and landing taken back to brick as the original lime plaster had blown and cracked badly in corners or was hole sounding and was coated with a Chrysotile artex skim that was damaged in places. We had a professional asbestos company do this work a few days ago, who fully...

Hi all, just a quick question regarding insulation. i have to insulate below a bow window board externally but it cant be any thicker than 75mm to be hidden behind the trims. i have an offcut of 140mm celotex. Is it ok to cut this in half so i have two thinner sheets 70mm thick and use it for...

Hello, I'm doing up my loft as in the drawing below. I will be using superquilt on the underside of the rafters down to the wall plate. I will board up a section in the middle with a raised floor. I already have a lot of mineral wool insulation up there which and rather than take it all out want...

Hi Guys, I’m planning on getting external wall insulation (and having the current internal sucked out of our 1930s house as we’re sure it’s causing issues). We’ve had a quote we’re happy with but it doesn’t include removing the old pebble dash render, just making good/removing loose pieces...

I am looking at renovating a 130yr old stone house which currently has lath and plaster internally. Two tradesmen have advised not to insulate and just redecorate but one has said rip out and insulate with kingspan. A friend who has been in a similar situation has advised that heating bills...

Have a good amount of damp proof membrane left which my builder previously used when laying down concrete. Really heavy duty stuff this: https://www.screwfix.com/p/capital-valley-plastics-ltd-damp-proof-membrane-blue-1200ga-15-x-4m/98181# I'm fixing insulated plasterboards with built in vapour...

Hi, I got a new shed installed and I was wondering about insulating it. Its your basic shed with 2x3 timber frame with cladding over it. I was wondering if I wanted to add insulation to the inside of the shed should I put a breathable membrane to the inside of the shed, stapled to the cladding...

I recently got a shed built after seeing one made by the builder for a neighbour nearby. The one I saw was in good condition and no mould etc. I had the same one built. Wooden frame, concrete floor, plywood and cladding on the outside, GRP roofing and plywood inside on walls and roof. No...

Hi, in the middle of doing a loft conversion and had a question about the positioning of the kingspan in the dormer cheeks and main dormer wall. The dormer cheeks are constructed with 4x2s and the main dormer wall is 6x2. Both finished with plywood and breathable membrane with clay tiles plus...

Hi all, Can anyone help with question. I am laying some new insulation and electric UFH and need to minimise the floor build up. So far I am laying a layer of DPM, 50mm PIR cut to fit and then was planning on placing a 6 mm cement backed tile back board the UFH mat and then tile on that. I am...

We removed the tiles from our window sill and ended up exposing the open cavity. (1959 Bungalow) What would be the correct method to close the cavity and replace the tiles with a wooden window sill? I dont think a cavity closer goes smaller enough to fit in to the void. I was going to: 1...

Moved into my house in past year(60s build) and found that the loft is boarded with insulation (blanket insulation under the boards). I have been thinking that I would like to further insulate the loft and don't really need the boarded area at present. One option would be to pull up all the...

Any views on this mechanism of insulating conservatory roof? Have been looking at replacement roof but perhaps this may be more economical? What are the disadvantages? https://www.insul-8.co.uk/

Hello All. I need advice regarding my loft, specifically insulation under and around the cold water tank. There is a bit of a story to explain everything that has been going on with my loft leading up to this and for that I apologise in advance if it is a bit long winded. Early last year it...

Hi all I hope I am posting this in the right place! I have a small L shaped bathroom (ground floor) in a old building that has no wall cavity. I've had a damp inspection (two actually) which both concluded that the damp I'm getting around the toilet and on the wall next to it is not from the...