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In theory, if Part-L1B applies (25% more wall is being renovated), the minimum U-Value that the improved wall should achieve is 0.30 W/m2K. This can be achieved by Solid Wall + 70mm PIR + Plasterboard. This is the thinnest possible for internal solid wall insulation to hit the regulation (if for...

I am exploring options of Durabase Plus + Prefab Wall + Ultraframe pitched roof... I doubt if there is a builder can marry all of these into a lightweight solution...

Hi All I like the warm deck idea but would like to limit the roof build-up to the minimum to maximise internal headroom within a single storey extension (PD rules apply). Rather than the conventional "120mm PIR board above plywood deck" arrangement, I am thinking of the following buildup...

I wonder if the base can be used for conservatory, there is no reason why this cannot be used in extension, right? To me it is like a suspended timber floor but made of steel and supported on concrete pad? If putting together with SIP, it must be a super quick and clean method to build an...

To achieve Building Regulations 0.30 U-Value, you will need to use the 62.5mm board (Kingspan K118 or similar). Once you hit that high U-Value, make sure all gaps are sealed with tape to maintain the vapour seal, otherwise, there is a risk of condensation (and mould) form between the insulation...

Hi my 1930 semi is a solid wall construction and externally pebble dash rendered. I am looking into EWI options and I wonder if anyone tried to use the SuperQuilt system? Their datasheet claims two 38mm cavities + the superquilt sandwiches between can achieve 0.30 U-Value. Very impressive to...

Personal experience... using the 38mm board from wicked, within a corner box room, wall surface temperature increased from 14 to 19 degC on a cold day (external 5C). Hugh difference from the radiation heat transfer perspective. Best £150 I spent to be honest.

Agree with woody. You should resubmit an application regarding the loft extension only from a lawfulness perspective.

There was a thread about swapping the 425 (with some wiring work) to a Hive system. https://www.diynot.com/diy/threads/changing-horstmann-425-diadem-to-hive-dual-channel.491978/

Hi All I am planning for a house extension at the moment and would like to implement the attached scheme in the Central Heating work. The house will have 1 bath + 2 showers when completed, for 3/4 people. The existing combi is a Baxi 30kW, 2 years old, from the previous owner. Since it would be...

it depends on the weight of your TV... I would use shorter fixing but apply some no-more-nail to the bracket to give the bracket extra "stick"

Oven would usually be 13amp but standard hobs would require 30A/45A hardwire connection. There are exception but I supposed you wont be able to have full power from all cooking zones at the same time.

Hi All In a 1920 built house (solid double brick / suspended timber floor), I am planning to lift all floor boards up to install floor insulation between timber joists. I am wondering if I should take the opportunity to apply sika on all timber joist surface for preventive measure also? Would...