WWilts

New build in progress. No noise currently. Anticipating future noise, trying to seal. Looking for particular brand / product to be recommended for these small gaps.

Small crevices in chipboard flooring joints (~1mm). Probably insufficient glue used. When rain fell, water leaked through (temporary problem before roof went on). However, sound passing between first and ground floors not ok. How to seal the small gaps acoustically? Which particular acoustic sealant?

True. Architect is ok with this version (pic).

yes, multiplied the scale by M for ease of depiction. Hope to always convert to correct units

Yes, roughly true. Difficult to look back now and recall the challenges. After a while it seems easy. Does 3D too I find LiveHome more intuitive

Tks, Sketchup (available in a free version which is highly capable)

Will that suffice in place of c24 CLS? 2.3m floor to ceiling height

Timber stud walls. C24 CLS 75mm (38x63mm actual). Would 600 centres suffice?

Double storey spine wall going down to foundations. 140mm concrete blocks till first floor joists. Then 100mm concrete blocks from first floor to ceiling of first floor (2300mm height). Length of spine wall 1340mm (3 blocks long) at first floor level. So far built only 5 blocks high Concern: first floor single skin concrete 100mm block wall needs better anchoring because it rests partly on blocks but partly on the joists (that run perpendicular to the spine wall). The joists are 2x10" C24. Topped by 18mm P5 chipboard surface. pic: 140mm inspine wall with 2x10" joists resting on it. Concrete block infill. Qu: What would help to anchor the base of the first floor concrete block spine wall to the first floor joists? So far, thought of heavy duty brackets along the base of the wall, screwed down to joists through the chipboard eg Simpson E9/2,5 Angle Bracket 65mm x 150mm x 150mm

For stud walls, what are the pros and cons of CLS vs timber? Both C24 grade

Is taping of PB joints more expensive than skim of the whole PB? Complete ignorance here, pls excuse.

Is the ply thought to be crucial?

New build in progress. Stud walls preferably to not transmit too much sound, esp from WCs/showers & between adjoining bedrooms. (pic) First floor height to ceiling 2300mm. Qus: A. Would CLS studs 50x75 suffice? Staggered studs. (actually 38x63) Would C24 (or C16) timber 2"x4" for studs offer any advantages in terms of a) structural strength b) sound proofing Some say CLS is less likely to twist, compared to sawn timber. B. Would OSB backing board on noggings suffice wherever stuff is to be fixed to the stud wall later? If yes, what thickness of OSB? (9, 11, 15, 18mm)?

Good tip. Perhaps we need to put some shim under the unit feet if they go in before floor covering

New build in progress. Looking ahead Qu: In what order/sequence is it helpful to do the following: Kitchen installation Flooring (probably luxury vinyl tiles) Painting/decorating (2 mist coats sprayed by us, finished by professional)

New build in progress. Entrance porch single storey. Soffit to be matchboard. Qu: Would "natural oak solid wood flooring" (B&Q) suffice for the soffit?

New build in progress Distance between planned kitchen sink (ground floor) & hot water cylinder (first floor) ~11m Qus 1) Is that too short a distance for a secondary return pump to make much difference? (eg Wilo or Grundfos) 2) What diameter of water pipe would be adequate for taking hot water from cylinder to kitchen hot tap? (smaller diameter pipe easier to conceal, else have to make holes in first floor joists) 3) How noisy would such a pump be (Wilo & Grundfos appear to be recommended)

Great point. Core-drilled the extractor openings near ceiling. There is a 12V version of the gadget too. Clincher: Kids might get their fingers into low placed extractors.

True. Trying to improvise in rooms where this is not possible (ceiling not high enough to be outside the mains electricity-free Zone zero of the shower). Any reason why the less desirable position below window should be avoided?

New build under construction. Background constant extraction with heat exchange (Vent Axia Tempra fans) in kitchen, wet rooms. To prevent damp etc. Showers sit against walls in some wet rooms. Mains electrics not allowed in that zone. Only lower parts of wall (eg under windows) available for these fans. Any reason why the extractors cannot be at lower level?

According to the official blurb, Cemfloor screeds can only be installed by applicators who have completed the Cemfloor training program and are registered AA approved Cemfloor installers. An experienced screed installer said only days ago that they were not Cemfloor approved. Same installer now offering Cemfloor screed installation to our builder. Builder says the screed installer will use a subcontractor for Cemfloor, but when pressed builder could not come up with a name other than the same experienced installer. Any serious disadvantage to allowing builder to proceed with this installer, who will also provide plastering/insulation?

New build under construction. UFH: Is it sensible to try and heat different parts of the same open plan area to different temperatures? ie > 1 thermostat for different parts of the open plan area eg. In pic, mid left is dining, which is part of the open plan kitchen/dining area. Sensible to have 2 thermostats on the basis that the kichen/breakfast bar will be in frequent use while the dining area less so?

Roofers doing exactly this now. Dropped batten gauge to min allowed with Cambrian, 210mm (90mm headlap). Architect's verdict worked well.

That is such a useful measure! We will know how hard to push the builder

Noted. Hoping that humidity will be controlled with constant background extraction (heat exchange extractors, non adjustable). Will have to see also how well the aritightness implementation goes.