MCS_012 3.0 CertifiedSolVe MountSolar Mounting for concrete plain tiles
One of the only Fire Safety compliant roof mountings. Airtight self extinguishing seal complying with MCS_012 3.0 for a future proofed installation.


Last Updated: January 2026
Key Takeaways
- MCS_012 3.0 Certified (Certificate BBA 7460) for concrete plain tiles
- Adjustment required: Raise seal height using washers for thicker tiles
- Mounting zone: 0-20mm from the overlapping tile
- Limitation: Do not install on top layer joins (solution due Q1 2026)
Installing on Concrete Plain Tiles
Concrete plain tiles are one of the most common roofing materials in the UK, found on millions of homes built from the 1950s onwards. The SolVe Mount uses a 28mm diamond core to create a precise opening in the tile or 'working area' to access the rafter. Our expansion seal expands when compressed, pressing outwards on the walls of the core hole and expanding beyond, creating a permanent watertight barrier. Forces are channeled directly to the rafter, ensuring the tile itself carries no load.
To raise the height of the seal: Concrete plain tiles are typically 10-20mm thick, which is thicker than natural slate. The washer adjustment raises the seal height to allow the seal to match the height of the roof covering.
Join considerations: Where the top layer joins the adjacent tile, the combined thickness of the plain tiles can exceed the seals optimum range (25mm) to guarantee at least one layer is sealed fully, avoid top layer joins, solution due Q1 2026.
How to install:
CORE - 28mm diamond core to create your 'working area' to access the rafter.
DRILL - Pre-drill using the drill guide provided.
FIX - Screw in the fully assembled SolVe Mount. Raise the seal height for concrete plain tiles, tighten the nut to compress and expand the seal.
DONE - Your MCS certified, IPX8 rated concrete plain tile roof mount is complete.
The SolVe Mount ensures no load is transferred to the concrete plain tile roof and creates a watertight seal that will outlive the roof covering.
Making solar installation simple, fast and repeatable. No concrete plain tile expertise required.
Unshrinkable Technology
Maintains a permanent 34-36mm expansion above and below the roof covering, ensuring no retreat or seal degradation over time.
172-Year Longevity
ASTM D395B testing confirms ~30% compression set after 172 years, preserving elasticity and waterproof "springiness."
Load Isolation
Forces are channeled directly to the rafter. The seal expands radially, exerting pressure only on the core hole walls, not the concrete plain tile.
Triple-Seal Protection
Primary seal matches roof covering depth, augmented by upper and lower seals for 100% watertight confidence.
2D SolVe Mount Installation Animation
Close Up Installation Video Below
