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Thanks, do you mean the u value i've achieved without any wall insulation, or that would be the achieved value if i were to put 62mm PIR board on? If the latter, would 0.3 be considered decent? One thing i would say is that most new builds are unbearably hot during the summer, does this...

Why would you be given a choice? Is the objective not just to retain as much heat as possible?

I've been using various online calculators for calculating u values for wall insulation, however they seem to vary considerably and make massive assumptions. I need to decide how thick insulated plasterboard i install into some bedrooms - my property is a victorian semi detached, 2x brick skin...

What does the cavity created actually achieve? Is it to prevent cold moist air hitting the final internal wall, or to provide ventilation?

Doesn't there need to be a cavity behind?

Do you know is his was a recommended method by the manufacturer, or did you just assume it would be ok? I suppose my only concern would be the plaster behind eventually blowing

I have a double skin/no cavity/no external render victorian semi, and i want to insulate some of the bedroom external walls. I dont want to have to remove the plaster as it'll cause major disruption. It seems dot and dab is not advisable unless there is a cavity, however can i mechanically fix...

I need to put a small rad in my bathroom, and the only place it can realistically go is where there is tiled insulated plasterboard fixed to a stud/baton system behind - see pic. How can this be fixed to the pir board securely?

I've just replaced my towel rail element, as the one that was there before was only 100w, and it never got above luke warm. I put in a 400w one (https://www.screwfix.com/p/flomasta-towel-radiator-heating-element-white-400w/245tf) , but this is so hot you can barely touch the towel rail. Should...

Hi, I've put in a shower cubicle in what used to be a room with just a toilet. I was originally going to put an extractor fan directly on the outside wall, however this would mean cutting a hole in the insulated plasterboard that i've installed in this entire room due to it not being that...

No the sink wastes are 50mm inner bore but 50mm fittings do not fit.

I've just bought a new sink which came with double trap and waste, however the pipework and fittings are neithrr 32mm nor 40mm . The sink came from a UK website but it's obviously made in china. Anyone had this before? I can probably botch it to fit into the 40mm waste pipe going outside but...

Just had kitchen units delivered, already prebuilt. The unit legs, which are already fixed in position, are not flat on the bottom and therefore won't sit flat on the floor and I can't figure out why they are designed like this. Any ideas? See pic

I need to tile a chimney breast alcove in which a cooker will be placed. Is hardibacker or other cement board ok behind a cooker? It'll be tiled obviously

Hello, I've had some bricks removed from.a chimney alcove to make it wider. Unfortunately the cut wasn't that clean in places as it was close to the edge of one row of bricks, so the surface is very irregular in places, with gaps 2 inches deep. I need to patch this up to make it level for...

True. I think I will just have to do it. Sigh

I'm renovating my kitchen and there is wallpaper and wood chip paper all over the walls and ceilings. This will need to come off if i skim the walls, however I really don't think I can muster the effort to take all this off. Can I just board over the walls? See pic

I have an internal doorway blocked up with ultralite blocks. I need to skim over the entire area, does the surface need to be prepared in any particular way? I have PVA and SBR to hand.

I have a small conservatory made of single skin of concrete block up to waist height and double glazed. See pic. I want to smooth the walls internally but probably a good idea to damp proof it first. The options are as follows: 1. Apply plastic DMP to the walls (which i already have plenty of)...

I have almost a whole bag of 0-10mm SLC and a few bags of 3-50mm, I need to slightly level up a conservatory floor before tiling. Will it matter too much if I mix these together, or at least pour them side by side? The overall depth is going to be no more than 10mm so since these both cover...