A seal of excellence on every finished joint.
Seven Seals is a specialist silicone and mastic sealing business serving Barnet, North London, Hertfordshire and Essex. Twenty-five years in sealant solutions, applied to kitchens, wet rooms, window frames, movement joints and commercial fit-outs.
Sealing services
Mastic & Silicone Sealing
The core trade — correct removal, substrate preparation and a finished joint that lasts.
→Bathroom & Wet Room Sealing
Anti-mould silicone for baths, shower enclosures and full wet rooms.
→Kitchen Sealing
Worktop-to-wall and upstand joints in paintable mastic or food-safe silicone.
→Window & Door Frame Sealing
uPVC, timber and aluminium perimeters sealed against draught and water ingress.
→Floor & Skirting Board Sealing
Skirting base joints and floor perimeter gaps in flexible paintable mastic.
→Movement Joint Sealing
Expansion and settlement joints with low-modulus sealant and correct backer rod.
→Mould-Resistant Resealing
Persistent black mould removed in full, then anti-microbial sealant applied.
→Fire-Rated Sealing
Intumescent sealants for commercial and multi-occupancy work, documented for compliance.
→Twenty-five years, one trade.
Seven Seals is led by Leroy J Wootton, who has spent twenty-five years in sealant solutions across the construction industry — leading teams, training applicators and holding the finish to a standard that survives inspection.
Whether the work is a single kitchen worktop joint, a full wet room, or a commercial fit-out running to programme, the approach does not change: the right sealant for the substrate, correct preparation, and a joint finished to last.
- Specialist silicone and mastic work only — no general building
- Domestic and commercial projects across four counties
- Full removal and substrate preparation before every reseal
- Clear scope and pricing agreed before work begins
Finished joints, not promises.
Where we work
Based in Barnet, covering North London and the surrounding counties within an hour's travel.
Request a quote
Tell us what needs sealing and we'll come back with a price. For anything urgent, call 07413 240639.