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Altro Everlay is a fully synthetic material designed to overcome the problems sometimes encountered in laying sheet floorings over new or old subfloors.
Altro Everlay can be laid over a variety of surfaces, such as old vinyl tiles, sheet metal, access floors, subfloors contaminated with oil or paint, or damp subfloors.
There are two types of Altro Everlay available.
Altro Everlay A and Altro Everlay B which has an added sound absorbent, insulating layer.
The main advantages of Altro Everlay are that it:
A specially coated fibreglass sheet underlay designed to enable the loose laying of Altro safety flooring, Altro Nuvola Cirrus rubber and Altro smooth flooring.
Thickness 1.2mm, width 2m, average length 50m, weight of roll 100kg / roll.
A specially coated fibreglass sheet underlay incorporating a layer of resilient material, which gives the added benefit of increased insulation and sound absorption.
Thickness 4mm, width 2m, average length 20m, weight of roll 88kg / roll
Sound absorption: when used in conjunction with Altro sheet material, it will meet the requirements of BS EN ISO 140-8 Impact sound absorption 21dB
Altro Everlay can be laid over a variety of surfaces without the need to fully adhere the material to the subfloor. This overcomes many of the problems encountered in laying sheet flooring over new or old subfloors.
Altro Everlay B also has the added benefit of being used to:
Subfloor should be smooth and flat. Any indentations should be filled with the appropriate moisture tolerant smoothing compound prior to the laying of the Altro Everlay material. Altro Everlay should be rolled out, with the peduncles on the underside, and cut into the perimeter. The underlayment should lay flat with no distorting bumps. Joints should be abutted.
Altro Everlay should be laid in the same direction as the finishing flooring, but the positions of the joints should not correspond. The Altro flooring should be adhered to Altro Everlay with Altrofix 19 Plus two-part polyurethane water resistant adhesive, using a ‘V’ notched trowel. As Altro Everlay is non-absorbent, it is important to apply the adhesive. with a small serration, 1.5mm x 5mm for textured backed floorings and 1mm x 4mm for smooth backed flooring.
When using Altro Everlay the installation can be straight laid or used in conjunction with SOC / Set in Cove or Self-Cove. Altro Everlay should be cut in to the perimeter of the wall and the appropriate skirting should be adhered to the wall and Altro Everlay. Where an Altro PVC flooring is used, all joints and mitres should be cut in, grooved and hot welded.
When using Altro Everlay, and particularly in areas that are subject to moisture spillage, the complete system needs to be sealed in a conventional manner, ie. the use of conventional clamping type drain gulleys, sealing of pipes, toilet pans, door frames, etc. and the use of an appropriate sealing method between the junction of the Altro flooring and the wall covering.
No guarantees can be offered when used in conjunction with non-Altro sheet products.
Whilst Altro Everlay enables the installation of Altro sheet flooring over damp subfloors, the system does not constitute a damp proof membrane as detailed in BS 8204.
The uses given in this data sheet are examples only. Please contact Altro Technical Services for further information. Where Altro Everlay is not suitable, please refer to the AltroProof epoxy surface damp proof membrane data sheet.
Composition:
Altro Everlay is a stabilising and insulating glass fibre sheet, which is resistant to damp and has an impervious vinyl layer on both sides, with a series of expanded resin peduncles on the underside.
Properties - internal tests indicate:
Dimensional Stability: DIN 51962 no appreciable change Inflammability: DIN 51960 hardly flammable
| Altro Everlay A | Altro Everlay B | |
| Thickness | 1.2mm | 4mm |
| Roll width | 2m | 2m |
| Average length | 50m | 25m |
| Weight | 100kg / roll | 95kg / roll |
NOTE: “Altro Ltd” (“Altro”) endeavours to ensure that advice and information given in Product Data Sheets, Method Statements and Material Safety Data Sheets (all known as Product Literature) is accurate and correct. However, where Altro has no control over the selection of its products for particular applications, it is important that any prospective customer, user or specifier, satisfies him / herself that the product is suitable for the intended application. In this process, due regard should be taken of the nature and composition of the background / base and the ambient conditions both at the time of laying / applying / installing / curing of the material and when the completed work is to be brought into use.
However, as site conditions and the execution of the work are beyond our control, we accept no resultant liability.
Altro’s policy is one of continuous research and development and we reserve the right to update our products and information at any time without prior notice.
