30mm Fermacell 2E31 Acoustic Overlay

Name: 30mm Fermacell 2E31 Acoustic Overlay
Brand: Fermacell
SKU: FERMACELL 2E31
Price: 27.5 GBP
Availability: InStock

£27.50

Tax included.

£36.67

Per M²

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Product Information

Impact Rating: 51 Ln,w (C1) dB

Airborne Rating: 70 Rw (C;Ctr) dB

Thickness: 30mm

Sheet Dimensions: 1500mm x 500mm 30mm

Area: 0.75 sqm Per Sheet

30mm Fermacell 2E31 Acoustic Overlay

The fermacell® 2E31 Acoustic Overlay is engineered to significantly reduce airborne and impact noise transmission. Perfect for both new builds and renovations, this durable, slim-profile system helps surpass building regulation requirements.

It consists of a 2 X 10 mm gypsum boards bonded to a 10 mm wood fibre base, serving as a dry screed alternative.

· Quick and easy to install

· Boosts underfloor heating

· No wet screed, no lengthy drying times

Technical Specification:

Description: Acoustic overlay (WF) with wood fibre boards of 10 mm thickness.

Thickness: 30mm

Size: 1500 mm × 500 mm (including a 50 mm shiplap joint)

UDL / Live load (kN/m²): 0 .25

Thermal resistance (m² K/W): 0 .26

Building material according to DIN EN 13501: Bfl-s1

Installation Guide:

Suitable for Timber suspended floors, concrete subfloors and underfloor heating systems.

1. Prepare the Subfloor

Ensure the floor is:

- Structurally sound
- Dry and clean
- Level and fully supported

Uneven floors should be levelled using a suitable fermacell levelling compound.

2. Install Edge Isolation Strip

Fit perimeter isolation strip around all walls, columns and penetrations before laying boards to prevent sound bridging.

3. Lay the Boards

- Start from one corner of the room.
- Lay panels in a brick-bond pattern.
- Stagger all joints by at least 200mm.
- Trim off the exposed overlap on the first row where required.

4. Glue the Joints

Apply two continuous beads of fermacell Floor Glue to the shiplap overlap before positioning the next panel. Excess glue should squeeze from the joint when properly fitted.

5. Fix the Boards

Secure the overlaps using:

- 19mm fermacell flooring screws, or
- 18–19mm divergent staples

Fix at approximately 250mm centres along all joints.

6. Complete the Floor

Continue laying, gluing and fixing the panels until the floor is complete.

7. Finish

Once the adhesive has cured:

- Remove excess glue.
- Trim perimeter strip flush.
- Install the chosen floor finish.

The flooring system is designed to receive a final floor covering and should not normally be left exposed as the finished floor surface.

Approvals:

European Technical Assessment: ETA-18/0723

BBA certificate reference: 98/3538

Please see below some recent acoustic test data using the Fermacell 2E31 product.

I Joist:

Pozi Joist:

Frequently Asked Questions

FAQ – fermacell® 2E31 Acoustic Flooring Overlay

What is the fermacell® 2E31 Acoustic Flooring Overlay?

The fermacell® 2E31 Acoustic Flooring Overlay is a 30mm dry floor panel consisting of two 10mm gypsum fibre boards factory bonded to a 10mm wood fibre acoustic layer. It provides a robust dry screed solution while helping to reduce impact sound transmission through floors.

What floors can the fermacell® 2E31 Acoustic Flooring Overlay be installed on?

The fermacell® 2E31 Acoustic Flooring Overlay can be installed over timber suspended floors, chipboard decks, concrete subfloors and suitably levelled existing floors. The supporting floor must be dry, level and structurally sound.

Is the fermacell® 2E31 Acoustic Flooring Overlay suitable for underfloor heating?

Yes. The fermacell® 2E31 Acoustic Flooring Overlay is suitable for use over most underfloor heating systems and provides a fast-response dry screed alternative to traditional wet screeds.

How much sound reduction does the fermacell® 2E31 Acoustic Flooring Overlay provide?

The integrated wood fibre layer within the fermacell® 2E31 Acoustic Flooring Overlay helps reduce impact sound transmission through floors. Testing has demonstrated impact sound improvements of up to ΔLw 21 dB on concrete floors.

Does the fermacell® 2E31 Acoustic Flooring Overlay need to be fixed to the subfloor?

No. The fermacell® 2E31 Acoustic Flooring Overlay is installed as a floating floor system. The panels are glued and mechanically fixed together at the shiplap joints.

Can tiles be installed on the fermacell® 2E31 Acoustic Flooring Overlay?

Yes. The fermacell® 2E31 Acoustic Flooring Overlay provides a stable substrate suitable for ceramic tiles, stone, LVT, vinyl, laminate, engineered wood and carpet finishes.

Is the fermacell® 2E31 Acoustic Flooring Overlay suitable for refurbishment projects?

Yes. The fermacell® 2E31 Acoustic Flooring Overlay is widely used in refurbishment, loft conversion and apartment projects where acoustic performance and minimal floor build-up are important.

What are the dimensions of the fermacell® 2E31 Acoustic Flooring Overlay?

Each fermacell® 2E31 Acoustic Flooring Overlay panel measures 1500mm x 500mm and incorporates a 50mm factory-formed shiplap joint for fast installation.

Can the fermacell® 2E31 Acoustic Flooring Overlay help level uneven floors?

The fermacell® 2E31 Acoustic Flooring Overlay can be installed over suitably prepared levelling compounds where minor subfloor irregularities exist.

Can the fermacell® 2E31 Acoustic Flooring Overlay be left exposed?

No. The fermacell® 2E31 Acoustic Flooring Overlay is designed to receive a final floor covering and should not normally be used as the finished wearing surface.

30mm Fermacell 2E31 Acoustic Overlay

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