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Hoping someone can tell me what I’m doing wrong. Replacing some panel does with oak ones at home. I Cut to size. Take it to the frame/lining..wedge it up, make sure I’ve for my gap 2p ish all the way round. Mark and fit my hinges but when I attach to frame but it doesn’t close. First one was...

I will insulating a suspended timber floor as part of a new extension build. I need 200mm wool for my u value of 0.18 What are the main advantages to using insulation slabs over loft roll other than the the loft roll is quite a bit cheaper. Thermally the only difference is 0.040 loft roll -...

Hi, Im in the middle of doing my building warrant for a self build extension and have a query i hope someone can help me with. I need to achieve a u value of 0.22 for my walls. Ive used the online calculators and they are telling me i need 165mm minimum to achieve this. I am using 145mm timbers...

Working out some numbers for a concrete slab. Can someone confirm the cement volume needed 1.44m3 x 1.76 = 2.53 tonne. I'm going to use a 1:5 ratio. So If I use the ratio on 2.53t of ballast and need to add extra for cement or is the 2.53t the total amount of ballast and cement. ie 2.53 x 0.2...

Hi, I am in the middle of trying to plan an extension project which will be timber frame. It will 145mm c16 timber being used. My question is, do i have to use solid board insulation ie kingspan between my studs or can i use the rockwool type of insulation. It will be a suspended floor aswell...