Your Cart

135mm Metal Pin Insulation Board Fixings pack of 200

135mm Metal Pin Insulation Board Fixings pack of 200 WKTHERM for Rockwool Slabs, EPS and XPS Boards
135mm Metal Pin Insulation Board Fixings pack of 200
  • 135mm Metal Pin Insulation Board Fixings
  • Metal screw with plastic bodies
  • Keeps the thermal bridging down to a minimum
  • Drill the hole, Mount the fastener and Hammer in the metal pin
  • For substrates: Concrete, Brick and other Blockwork
Estimated delivery:
In Stock
£ 80.83
Ex VAT: £ 67.36
  • Brand: W-M®
  • Model: 135mm WKTHERM
  • Weight: 3.65kg
  • Dimensions: 135mm x 60mm x 8mm
  • SKU: 135mm
  • Product code: P1-2247
  • MPN: 135mm WKTHERM

Options available

135mm Metal Pin Insulation Board Screw Fixing is a plastic body fixing with metal pin, used to fix the thermal insulation boards to the wide range of substrates like concrete, brick and other blockwork in an External Wall Insulation (EWI) system.

WKTHERM metal mechanical fixing 135mm is made from a metal screw with plastic bodies to keep the thermal bridging down to a minimum, meaning that the system maintains its insulating qualities.

The metallic rods are screwed in to give the system stability while reducing the impact on the system when fixing it in place.

135mm Metal Pin Insulation Mechanical Fixings (pack of 200) have an 8mm wide metal core (diameter) and are suitable for fixing Mineral Wool slabs, EPS and XPS insulation boards.

Metal Pin Insulation Screw Fixings are available in a choice of 7 lengths, allowing them to be used on a variety of thicknesses of insulation boards.

If in doubt about the suitability of the substrate, it is recommended a pull test is carried out to ensure it is strong enough to support an External Wall Insulation (EWI) system.

The lengths of fixings available are: 115mm, 135mm, 155mm, 175mm, 195mm, 215mm and 295mm to suit thermal insulation panels from 50mm up to 230mm thick.




Diameter: 8mm

Length: 135mm

Material: Zinc coated carbon steel and polyamide

Head width: 60mm (washer diameter)

Expansion zone: 55mm

Application temperature: from 0 °C to +35 °C



 · Brick

 · Block

 · Cement

 · Aerated concrete

 · Concrete

 · External Wall Insulation systems

 · Honeycomb bricks

 · Hollow light and dense aggregate blocks

 · Thin coat rendering

 · Insulated render systems

 · Solid stone and bricks

 · Autoclave concrete substrates

 · Breeze blocks

 · Clay bricks



 · Impact resistant polypropylene anchor

 · Zinc coated carbon steel expander pin

 · Anchor diameter - 8mm


Installation method:

 · Drill the hole.                 

 · Mount the anchor.                                   

 · Hammer in the metal pin.     



 · Don't use hammer mode when drilling.

 · Hole should be drilled at least 10mm longer than the embedding depth.

 · Clean of the hole by at least two in and out movement of the drill to bring out the debris.

 · The hole must be then covered with the same material (cut off) or by a mortar layer to stop any thermal bridging.



 · European Technical Approval ETA-08/0172


*Further information may be found in our Downloads section.

Fairly easy to access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet ǀ 

Board covarage 22.5 m2
Diameter 8mm
Length 135mm
Material Zinc coated carbon steel, plastic
Profile For Rockwool Slabs, EPS and XPS Polystyrene boards
Thermal Conductivity 0.002 W/mK
Width 60mm (head washer)
Head Polyamide
Application Temperature from 0 °C to +35 °C
Shipping method Courier
Applications Stone ǀ Brick ǀ Block ǀ Masonry walls
Expansion zone 55mm
ETA Notification Yes
Features Keeps the thermal bridging down to a minimum
Manufacturer WKTHERM®

Write a review

Note: HTML is not translated!
Bad Good

We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
135mm Metal Pin Insulation Board Fixings pack of 200 WKTHERM for Rockwool Slabs, EPS and XPS Boards
135mm Metal Pin Insulation Board Fixings pack of 200
£ 80.83