Proflex Ultra MS Adhesive 16kg is a flexible single-component wood-flooring adhesive that self-cures to form an elastic and non-shrinkable adhesive layer which is resistant to moisture and heat. Provides excellent adhesion to most common substrates and is water-and-solvent free, virtually eliminating risk of deformation to flooring, or harm to users.It can be used with solid planks up to 20mm thick and 230mm wide. Suitable for underfloor heating, coverage per 16kg tub is approx 16m2. 

For full surface bonding of unfinished or pre-finished parquet, solid and engineered wood flooring to subfloors including concrete, chipboard, sand/cement screeds, fast setting screeds, anhydrite screeds, on pre-existing wood, ceramic tile, marble and marble tile flooring. Can be laid directly to bitumen/asphalt, provided that the subfloor is at least 30 years old.

The adhesive is specifically designed to allow for the seasonal movement of solid hardwood flooring. The adhesive is suitable for all wood species according to the UNI EN 13556.

Technical Data

Base: MS Polymer
Consistency: Paste
Colour: Light brown
Hazard Labelling: EC1Plus – very low emissions. Solvent, water and isocyanate free.
Coverage: 1kg/m2 approx, depending on subfloor and trowel notch size*
Curing/drying: Chemical self-curing – minimum of 12 hours for foot traffic, 24 hours before load-bearing or sanding/finishing.
Open/working time: Approx. 30 minutes at 21°C and 50% RH. Product is tack-free after 60 mins.
Cleaning: Easily cleaned, when wet, from hands and tools with builders wipes.
Shelf life: 12 months in unopened packaging in a cool, dry place at between +5°C and +25°C.
Temperature Resistance: -40°C – +90°C (+120C for a short period) when cured.
Specific Gravity: approx. 1.6g/cm2 Total Solids: 100% (solvent free)
Tensile strength [N/mm2] (ISO 37 DIN 53504)1.4
Shear strength [N/mm2] (wood-wood; DIN 14293) 1.6
Tear strength [kN/m] (ISO 34-1) 0.51
Application temperature [°C] from +5C to +40C
Appearance; Thixotropic paste
*trowel sizes according to TKB, use B1 for smooth floors and best coverage, B3 or B6 for less even floors and a higher bead height.

Substrate:

Before installation of the wood, the substrate must be checked to ensure it is suitable and complies with all recommendations laid down by the wood manufacturer. Check the moisture content through the entire thickness of the sub-floor with a carbide or electric hygrometer. The moisture content must be as recommended by the flooring manufacturer (generally max 3% for sand cement substrates and max 0.5% for anhydrite, measured with a carbide hygrometer. For sub-floors with underfloor heating, the values are max 2.5% and 0.3% respectively) Proflex Ultra should be applied to an even, dry, clean and smooth substrate which is free from irregularities and cracks. Residues of old adhesive may affect the adhesion and must be removed mechanically. Loose or damaged surfaces must be repaired before application of adhesive.

Powdery surfaces may be treated with FloorPrep Floor Binder. See relevant section of the manual for details. Smooth surfaces such as anydrite should be roughened and if not already done, surface laitance should be mechanically removed.  When installing a parquet floor on top of marble, terrazzo or ceramic tiles, they must first be cleaned with caustic soda or another suitable cleaner. Once cleaned rinse the tiles thoroughly with plenty of clean water. Ensure the floor is completely dry before applying the Proflex Ultra. A preliminary compatibility test is recommended on every surface.

Wood:

The parquet flooring must be acclimatized according to the wood supplier’s instructions. Check before installation that the moisture content of the wood is as recommended by the supplier, (generally 9% +/- 2%), if the moisture content of the wood is more than 11%, installation is not recommended. Allow a gap of 2 cm (or as recommended by the wood manufacturer) around the perimeter of the laid parquet, including any columns or structures which penetrate the floor.

Applying the Adhesive:

Proflex should be allowed to reach room temperature before application. Apply the adhesive to the surface by means of our Proflex notched trowel. Do not apply more than can be covered with parquet in 30 minutes. Slide the parquet onto the adhesive layer and tap into place or tamp down with a rubber hammer. A minimum of 80% coverage is required to ensure perfect adhesion. Loading the parquet with weights will improve final bond strength. Wait at least 24 hours before sanding and finishing. Uncured adhesive may be removed from tools and wood with builders wipes. Cured adhesive must be removed mechanically.

Safety Recommendations:

Apply the usual industrial hygiene precautions and wear protective gloves.

Precautions:
Never install to substrates which are not protected against possible rising damp.
 Do not apply the adhesive at temperatures below 15C or above 25C.
 Minimum temperature of the substrate should be 15C
Do not apply the adhesive where the relative humidity is above 75%
Never install onto a substrate which contains too much moisture or onto substrates with a moisture content higher than recommended by the wood supplier.
Never install wood which is too dry, (<7% moisture). This can expand at higher humidity and cause damage.
Do not install if the walls and ceiling of the area are not dry, eg after plaster, painting etc.
Do not dilute the adhesive.
Always mechanically remove any old adhesive residue before bonding.
Do not bond onto bitumen or other sub floor types that may leech oils, waxes, plasticisers etc, without first sealing the floor and isolating the adhesive from contamination, using a two-part poxy floor sealer. If Bitumen is over 30 years old it can be bonded to directly.

Under floor heating must be turned off for min 48 hours before application and not re- started for 48 hours after the adhesive has been applied.

Wood manufacturers recommendations to be followed regarding re-starting heating

Returns Policy

Under the Consumer Contract Regulations the Customer has the right to return full orders within fourteen days of the Goods being received without giving a reason.  Goods returned must be in a saleable ‘as new’ condition and returned in their original packaging.  Shrink-wrapped and factory packaged Goods must be returned unopened.  In the unlikely event that you wish to return your order, all returns are subject to a 25% re-stocking charge and the customer will be charged for the transport costs of the goods back to the manufacturer from which they came, we will arrange the transport back.  We buy direct from the manufacturers who ship on our behalf, we are an Internet Only Business and do not hold any stock or have our own warehouse.  Therefore this is the reason the 25% re-stocking charge applies as this is what we get charged from our suppliers.  Part orders cannot be returned.

Our supplier/manufacturer will arrange transportation and the customer must pay all costs involved in transporting the Goods back to the warehouse from which they came. The Goods must be insured whilst in transit for the full value of their cost price. Returns made under this provision must be agreed in writing or by email by both parties before the Goods are returned.  The Company will not refund the costs of delivery and labour etc. that the Company incurs in supplying the Goods. Once the product has been returned and checked by our suppliers to confirm it is in a resaleable condition, only then will the refund be processed.  The refund will be made to the credit or debit card that was originally used to complete the transaction.

This provision is not applicable to ‘special order’ or bespoke items.  Any special order or made to order products cannot be returned.

Goods supplied incorrectly entirely through the Company’s fault will be re-supplied at no cost to the Customer.

Return Instructions

If you need to return an item, please email sales@woodflooringsupplies.co.uk with your order number in the title.