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The Unifix Dowty Roof Washers (M6) are designed for professional roofers and DIY enthusiasts who require a dependable, watertight seal for roofing fasteners. These washers provide excellent durability and structural integrity for M6 bolt installations, effectively preventing moisture ingress and ensuring long-term project reliability. While highly effective for standard M6 hardware, users should ensure they are not attempting to use these on larger bolt diameters where they will not provide the correct fit.
| Colour | Black |
|---|---|
| Model Part Number | Ub9Dowwash/015 |
| Brand | Unifix |
No, these are specifically sized for M6 bolts. You should use the Unifix M8 Dowty Roof Washers for that size.
This pack contains 100 individual washers.
It is not recommended to reuse these washers, as the sealing compound loses its effectiveness after the initial compression.
The washers are built for outdoor durability, featuring a robust composition designed for moisture-resistant roofing seals.
Generally, these washers are designed to be self-sealing and typically do not require additional liquid sealant if tightened correctly.
Check that the washer is oriented with the rubberized sealing face toward the roof surface and ensure the bolt is tightened to the correct torque.
Avoid using high-speed, high-torque power drills. Tighten manually or use a controlled torque setting to prevent over-compression.
To install, slide the washer onto the M6 bolt before threading it through the roofing material. Ensure the rubberized side faces the roofing sheet to create the seal. Compatibility is limited strictly to M6 threaded hardware; for projects involving larger bolts, please use the appropriate variant such as the M8 version. To maintain the integrity of the seal, avoid over-tightening with power tools, as excessive force can cause the washer to distort and compromise its moisture-resistant properties. Store in a cool, dry place until use to prevent potential material degradation.
