Installation and fitting guide

To ensure that all JHS carpets perform to the required standard the following installation procedures should be followed:

Inspect the carpet before laying is commenced and before it is cut in to
Allow the carpet to acclimatise to at least 65 degree Fahrenheit
Check for dye lot and roll sequence

Surface Preparation

1. The floor surface must comply with: British Standard BS 5325:1996, meaning that the floor must be clean, smooth, dry and structurally sound. Uneven concrete floors should be screeded and should be neither friable nor loose and powdery. Concrete floors laid direct to the ground should incorporate a damp proof membrane and should be sealed to prevent dust rising from joins and perimeters.

2. The sub floor must be free from excessive moisture, otherwise long adhesive drying times will occur.

3. The surface must be free from contaminates such as grease, paint, dirt etc. which will affect adhesion.

4. Under no circumstances should the adhesive system be directly applied to an asphalt floor, because of the likelihood of migration of material from the asphalt.

5. Timber floors must be smooth. If resurfacing is necessary use 6mm plywood or hardwood nailed or stapled at regular closely spaced intervals.

Installation

Direct Stick: Ensure that the carpet is cut to plan allowing for adequate pattern matching. Fit the carpet into the recommended wet adhesive. Using a power stretcher, not a kicker, stretch the pattern into register. Always seal all of the seams. Use a lino roller to get any creases out. This will allow the carpet to fully adhere to the adhesive.

Double-Stick Contract Installation System:The Double-Stick underlay system is recommended for Heavy Contract and Luxury Contract Double-stick Installations, but not recommended for use on wood block floor, unless the subfloor is able to breathe.

Unroll the Underlay, with printed side up. Cut to shape leaving the excess around the margins. Fold back one half of the underlay and using the notched trowel apply a recommended tackifier to the sub-floor ensuring coverage is complete. Allow the tackifier to dry completely – it will turn from white to clear.

Unfold the underlay onto the dry tackifier (if it is not completely dry, the underlay will bond permanently to the sub-floor).

Repeat this method with the other half of the underlay. Trim in the underlay neatly arund the margins, allowing a gap around the area if a tuck finish is required. The gap will depend on the quality and the thickness of the carpet being laid. All carpet selvedges should be stripped, where necessary, and sealed to prevent fraying. Position the carpet precisely on the underlay before any adhesive is used. All pattern matching, borders and mitred corners should be carefully pre-planned. The underlay seams should always be laid at right angles to the carpet seams. Fold back one half of the carpet and apply the adhesive with a trowel.

Unfold the carpet on to the wet adhesive and use a glider to smooth out any wrinkles or bubbles and to ensure a firm bond.

The use of gripper should be considered on all double-stick installations, on account that carpet shrinkage – be it natural, caused by atmospheric conditions or carpet cleaning, may result in movement away from the walls.

Unlike other systems Multi-Fit with lift cleanly and not break up on lifting. The underlay may be re-laid after access has been achieved.

Joseph, Hamilton & Seaton - Leaders in Contract Carpets

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Installation and fitting guide