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I originally posted this in the building forum, but should have put it here. 3 years or so ago, I had an EcoTec fitted to an external wall of garage. It was installed by Valliant fitter and registered etc. I got a compliance certificate at the time. Fast fwd to a few months ago and the...

Does anyone know how to workout u-values that might be able to assist BCO coming on Tuesday and it would be nice to be able to fend him off. My original plans for an extension had the roof done with normal fink trusses. The plans stated 300mm rockwool laid in 2 layers and to pack the eaves...

Recently fitted a bifold window to my house. There is a small black wedge screwed into the frame. Should this be removed? Not sure if its there for transportation only or if its permanent. It seems like disposable plastic rather than a permanent fixture.

I'm about to lay a load of 22mm chipboard flooring. I've watched a few Robin Clevett videos and I'm going to copy his method. Basically glue the flooring to joists with PU glue and also glue to tongues and grooves together. But - do the ends of the boards (narrow width) have to land on a...

Whats the best fixings to use to fit an external bifold door to brick? I was gonna use standard T30 concrete screws, but worried they will be too big and will damage the thermal break.

Whats the best way to cut down an aluminium cill?

I'm about to crack on with the garage ceiling that is below a new bedroom. The plans state 150mm celotex between joists and 50mm underdrawn. The plans don't detail the plasterboard. Would normal 12.5mm board suffice, or does it need to be fireline? And is 1 or 2 layers going to be required...

Whats an acceptable way to insulate a stud wall between garage and house? I was gonna build it with 3" x 2" timber.... so it's either 60 mm celotex or 100mm loft roll squeezed in. Any opinions?

By way of looking at this image...... where would you say the boundary is between the house on the left and the one on the right... A) at the edge of the driveway of the red one.... or B) at the left edge of the brick pilar Heres another image.... I think its the edge of the driveway and...

Can anyone recommend decent quality rain water goods? I've used Floplast last time, and they just seem a bit thin and flimsy. Are there any thicker better quality makes...... floplast seem to dominate the market.

I've never used metal stud work before. The studs seem to be either 50mm or 70mm. I assume metal stud walls are narrower than wooden stud walls. Or am I looking at the wrong stuff?

I need to cross a 15mm pipe over 2 parallel and vertical pipes..... one of them is 22mm, the other is 15mm and they are 15mm apart. Will a normal 15mm cross over do the job, or is there a better way?

Do you need PP to have a velux installed on roof on the front elevation?

Anyone used Gapotape when fitting PIR into ceiling? It looks good, but eye wateringly expensive at 95 quid for 50 meters. But..... it got me thinking. Why couldn't you just use 8mm thick 150m wide UFH perimeter foam..... its about 20 quid for 50 meters and a layer of foil tape over it. Works...

I'm using scissor trusses to create a vaulted ceiling in a new bedroom im building above garage. The drawings detail 150mm celotex between 1st floor joists and 50mm under the joists. This seperates the garage from bedroom. The original plans were for a standard ceiling, but I've managed to...

In the attached pic..... the monopitch roof spans a large opening into an open fronted porch. What would typically span that opening behind the fascia board? I'm building virtually the same thing, but in having it enclosed on the front with a composite door and side panel. What is holding...

I have a window that is 2.6 meters wide. The cavity closers i have are only 2.4 meters. Do they need to be joined, overlapped or just butted together to get 2.6 meters.

I am closing the cavities on a side extension im having built. Standard cavity wall construction with 100mm cavity with 50mm PIR and dense concrete blocks. I've noticed that around some of the reveals the insulation is missing. Not an ideal situation and I cant just slip in PIR boards due to...

Can u put a velux on the front of your roof? Are there any planning restrictions with it going on the front face of a gable roof?

Had inspector round on Friday to check some stuff on my extension. He noticed that some of the wall ties were angled down and inwards from the outer leaf to the inner leaf. He said it might allow damp to cross. I've been around a few sites over the last couple of years and I've seen the way...