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Technical Information

Some General Guidance for Fitting

Solid Boards

Boards up to 150mm wide can be secretly fixed down to timber subfloor, either plywood or timber joists Boards over 150mm wide need to be face fixed down, 2 fixings either side of the board will be required at regular intervals down the length of the board. Fixings should be either nails or screws with pellets. We would only recommend boards 140mm and under to be glued down and only with glue recommended by Lawsons

Engineered Boards

These can be either glued or fixed and this applies to wider boards too. Also can be used over underfloor heating but guidelines still need to be followed

The maximum temperature at the point of contact (where the heating meets the underside of the floor) is 27 oC. In order to ensure that this is adhered to, we recommend the use of an underfloor heating system that controls this temperature by way of floor sensors (a probe).

The radiant heating system must not exceed 8 watts/sq.ft; heating capacity and the running water temperature should range between 38-49 oC at the most.

To preserve the integrity of the flooring the room temperature must not vary more than 9 oC between seasons and the humidity must be maintained between 45 and 60% relative humidity throughout the year. A humidifier should be used to maintain relative humidity if necessary.

During the heating period small hairline cracks may appear. These hairline cracks are generally evenly spread and are not cause for concern. They may also appear under rugs and furniture.

Pre-Installation Requirements

Before installing the Flooring radiant heat slabs must be activated to normal living temperatures for a minimum of 21 days. This will ensure that the slab is dry. During this period the temperature should be gradually increased until the maximum recommended temperature is reached. The maximum temperature should be maintained for at least a week.

Before installation reduce the temperature gradually by 5 oC per day. At the time of installation the subfloor temperature should be between 16– 18 oC.

The installation can now be carried out.

After installation the temperature of 16–18 oC should be maintained 3 – 4 days before it is increased gradually over a further 3 – 4 days to the recommended subfloor surface temperature of 24– 27 oC. Despite the season the recommended temperature of 24– 27 oC should be maintained for a further 3 – 4 days. Please keep a daily heating log during the installation period; this may be useful at a later date.

After Care

We generally use Morrells products on our wooden floors.They are a British company with a Royal Warrant and are long established. This fits in with our own philosophy of using British made products wherever we can. They have a range of cleaning and maintenance products and we can supply all instructions and safety sheets on PDF.

 

Preventative Maintenance

Abrasive particles of dirt and grit trafficked on to a wooden floor finished with lacquer can be very damaging and seriously shorten the lifespan of any treatment. The floor’s surface will quickly become dull due to scratches and the wood may be affected by the ingress of moisture and stains. Matting placed at external entrances can be highly effective at prolonging the appearance and life of the floor whilst reducing the frequency of refurbishment. It is important that matting is of a type which allows abrasive particles to drop through it rather than remain on the surface where it can then be tracked on to the sealed floor. Matting should be large enough, ideally, to allow two steps across it, but, as a general recommendation, the mat should be as large as is practical. Periodically matting should be thoroughly cleaned. A dirty mat is ineffective and can act as a ‘reservoir’ of abrasive particles.

How to look after your floor

An effective maintenance programme will keep the floor clean and looking as good as possible. The following information is designed to provide a starting point for such a programme and is appropriate for both commercial and domestic floors. However, all floors are unique and will require individual assessment because the factors affecting them will vary. Changes in traffic levels and seasonal changes will also need to be taken into consideration; for example, additional matting may be required during periods of snow or heavy rain. The frequency of any maintenance should reflect the use of the floor, and should be altered accordingly.

An effective maintenance regime should consist of:

  1. Dry Cleaning: Floors should be cleaned daily using dry cleaning methods, such as vacuum, scissor mop or soft broom. It is important to remove any abrasive particles of grit and dirt which may scratch the floor seal when trafficked under footwear, chair legs, and other items moved across the floor.
  2. Damp Cleaning: Soluble dirt should be removed by cleaning using a spray-buff system or scrubber drier (large floors), or by mop and bucket (small, domestic floors). Diluted Morrells GP cleanse should be used as a cleaning agent. All cleaning materials should be replaced periodically to ensure effective maintenance.
  3. Additional Cleaning: Wooden floors in commercial areas which may often become contaminated with grease from food, sweat, or residue from other sources, may require additional cleaning to removethese materials. Cleaning using Morrells GP cleanse will remove these non-soluble materials and restore the slip resistance of the floor seal.
  4. Further Protection: To revitalize any obvious deterioration in the floors appearance, due to scratch and scuff marks, then the use of induro XL Revivers - induro XL Revive for WB floor finishes and induro XLO Revive for Oiled floors are recommended. If any areas exhibit more than just ‘light’ damage, then a refinish would be advised.

    It is recommended that an adhesion check is carried out on a small area when used over flooring products other than the Morrells induro ranges.

Refurbishment

To revitalize any obvious deterioration in the floors appearance, due to scratch and scuff marks, then the use of induro XL Revivers - induro XL Revive for WB floor finishes and induro XLO Revive for Oiled floors are recommended. If any areas exhibit more than just ‘light’ damage, then a refinish would be advised.

It is recommended that an adhesion check is carried out on a small area when used over flooring products other than the Morrells induro ranges.

 

All the above are only guidelines and all fitters should be aware of them