Subfloor levelling and Soundproofing in N1 Camden

One of the most important stage in a wooden floor installation project is the subfloor preparation. Most often this stage is below the duration and complexity of the floor fitting itself but for this project is was the reverse.
Posted on03-06-2017 by 456

One of the most important stage in a wooden floor installation project is the subfloor preparation. Most often this stage is below the duration and complexity of the floor fitting itself but for this project is was the reverse.

During its long history the victorian terrace house shifted resulting in a considerable inclination of the floors. This was making almost impossible to bring in a tall bookcase since it would end up look like the Leaning Tower of Pisa. From the highest to the lowest point we had a level drop of 120mm.
Also, because these type of buildings were not engineered for the modern way of living, soundproofing was required to protect the downstairs neighbour of impact sounds and airborne noise.

The first step was to expose the joists by removing the original pine boards. From now on until the subfloor was rebuilt we had to work with extra care measures so not to drop tools or even worse, fall ourselves through the ceiling below.

We sistered the joists individually to bring them all at the same height. New noggins were added also. This 2 reinforced the existing structure. The top of the joist were covered with joist hoods to ensure a total separation of the new plywood subfloor from the joists structure. Therefore the sound vibrations would not be transmitted into the ceiling below. In between the joists acoustic mineral wool was laid to eliminate the echo chamber effect. Plywood was installed afterwards with acoustic perimeter strip. Now that the subfloor was leveled, soundproofed, and stabilised the impact sound reduction Regupol 3912 was glued down.  

Following the completion stages which took us a serious number of days we could start installing the wooden floor all throughout except the stairs and bathroom.

Wooden Boards: Engineered Oak Distressed & Smoked, Pre-oiled
Dimensions: Width 180mm, Thickness 13mm, Length - various.
Location: N1 Primrose Hill

Related
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Fitting Grey Engineered Oak Flooring: grey hardwood flooring is becoming more popular. It offers a more neutral palette that can assorted with intense furnishings. Many auction houses exhibit prized items on matte grey display stands because this colour offers the maximum potential to make detail stand out. Grey flooring also suits well in houses where a monochrome decor is preferred...

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MDF Ogee Skirting, white pre primed, will look great as a decorative baseboard between your walls and flooring, adding the perfect finishing touch to any room in your home. Coming already primed - you can paint to get the finish you want. Suitable interior decorative.

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Stair Nosing - solid Oak: the stair nosing is designed to finish off the area on the edge of a step or stair. It is suitable for any wooden flooring 15-18mm thick, regardless of your floor being oiled or lacquered. Solid and engineered floors only.

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Pipe Collars - solid Oak: are designed to be used around the edge of pipes which go into the floor to hide the expansion gap which is required when installing wooden flooring. Oak Pipe Cover is designed in two halves that can be fixed around 15mm pipes to hide expansion gap It is suitable for any wooden flooring, regardless of your floor being oiled or lacquered.

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Sikabond T52 FC Elastic wood flooring adhesive: is a gun or trowel applied elastic wood flooring adhesive for use with any width board. It is also used in conjunction with silent layer mats as part of the AcouBond system.

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Earthwool Acoustic roll - Undrefloor Mineral Wool roll from Knauf provides a high level of sound absorption, whilst also improving the thermal and fire performance of the wall, floor or partition. Using glass mineral wool as a sound absorbent layer in partitions and floors significantly improves their acoustic performance, whilst only adding minimally to the overall mass of the structure.

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Karma Acoustic Joist Hood Insulation: is suitable for use in the refurbishment of timber joist floors within masonry constructions and also useful in "Room in a Roof" applications. Consists of a 12mm profiled low-density polyethylene foam with gas impregnated acoustic additives. Specifically designed to friction fit onto the joists.

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Karmaplus Acoustic Perimeter Strip: Karma Acoustic Perimeter Strip consists of 100% recyclable non-crosslinked polyethylene foam. The product is designed to prevent any flanking transmission and maintain the acoustic integrity of a structure. Karma Acoustic Perimeter Strip is installed at a structure’s floor and wall perimeter.

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