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137JPE Newest Member · 10 hours ago10 hr

Like what you see..?

Why don't you sign up and become a member of the community..?

MVHR cold loft insulation shed/igloo

Just build from the joists, make a box with access door and floor across joists (you need to maintain the MVHR). Do not insulate the floor to house section and house heat will keep the space in the box warmer. Insulate box and door. Do MVHR avm at the mount of the MVHR or mount on 2x layers of plywood (2x 18mm) this will dampen the noise.

Your current design looks very poor access for maintenance. Not a fan of MVHR in a loft, to far out the way and will never get maintained, plus you need full walkways and lay down area for tools etc otherwise no one will maintain it.

By JohnMo · 22 minutes ago22 min
External insulated pipes to ASHP (that old chestnut again :) )

Wasn't convinced the pre made stuff had a great U value and was stupid expensive, so rolled my own. We are about 5m underground and quite a bit over ground via an insulated shed. We used 28mm hep2o and transitioned to copper (28mm) though the wall. Started with 6kW heat pmp down sized to 4kW

By JohnMo · 35 minutes ago35 min
How to do this heat pump thing cost effectively?

Obviously, the main heat pump circuit boards will be proprietary but outside the main external heat pump enclosure there is generally a lot of scope for using industry standard parts. Worst case, in 10 years, if the heatpump breaks you can replace just it vs being stuck in the ecosystem and potentially having to replace almost everything if you want out.

Others may disagree on this, but to me what matters more than the max output is the minimum modulation. Find something that can deal with the shoulder periods without lots of cycles, then make sure you can cover the calculated worst case. Going bigger on the max output is only really detrimental if the bigger unit can't modulate as low as it needs to. So maybe you can find a model that does everything you want. Having said that I know minimum modulation output is not widely publicised so actually being able to find options for this might be challenging.

Having said that, I'd far rather have a system that works smoothly and efficiently 95% of the time and cope with the 5% being a bit colder/hotter than I would prefer vs having a system that is inefficient/problematic because it's too big for the normal case.

If they otherwise fulfil your requirements (there may be other issues with them) then you can get enclosures/covers that can hide heatpumps. Need to make sure they don't block the airflow, etc, but heatpumps can be disguised.

By -rick- · 57 minutes ago57 min
An extra £442k to build a 2 bed London flat. Don't know how good their modelling is.

Well, its certainly not a surprise. Ive mentioned a couple of times on here.

If we continue as we are the cost of building a house will exceed its market value in more areas than it already does. Nobody is going to build houses at a loss.

Meanwhile government just keeps adding costs. You reap what you sow.

By Roger440 · 1 hour ago1 hr
Has anyone had installed aluminium gable barge boards, fascias and soffits?

Has anyone had aluminium gable barge boards, fascias and soffits installed?

We have marine plywood 18mm substrate.

We are installing the aluminium Kytun Dry Verge on a natural slate roof. The plan is to install the Kytun Dry Verge and slate the roof first then use and use 3 or 4mm spacers on the Kytun Dry Verge to maintain a gap in order to push up the aluminium facias underneath the verge.

It would be enormously helpful to hear from others who have had aluminium installed.

We are looking at Kytun AluSwift and Guttercrest.

We are aiming for longevity and hopefully zero maintenance.

We are looking at Lindab Magestic for the gutters.

Many thanks

By newbridgewolf · 1 hour ago1 hr

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BuildHub Guide: Information about the site : Introduce Yourself

Build Design, Planning, Finance and Legal

House Construction & Structural Issues

Building Trades

Environmental, Alternative & Green Building Methods

Self Build & DIY: General

Self Build Regional Groups