Sidcup & Bexley, South East London
Mastic Sealant Specialist in Sidcup & Bexley
Sharp lines, mould-resistant silicone and a finish that lasts. The Mastic King covers Sidcup, Bexley and the surrounding DA5–DA15 postcodes — same-day visits available.
Sidcup and Bexley sit in the DA postcodes of South East London, bordering Kent — and we're in the area regularly as a natural extension of our Dartford and Swanley coverage. We cover DA5, DA14 and DA15, including Sidcup town centre, Bexley village, Albany Park, Foots Cray and the surrounding areas. The DA postcodes have a high density of 1930s and post-war semi-detached housing — a type we know extremely well. These properties typically have bathrooms where the silicone has been applied multiple times over the years, building up layers of old sealant that need to be fully stripped back before a proper reseal can be done. We see this constantly across Sidcup and Bexley. Beyond bathrooms, kitchen worktop sealing is a regular job in the area — particularly in homes that have had new granite or quartz worktops fitted. We also carry out shower enclosure resealing, window frame mastic and LVT flooring edge sealing across the DA5–DA15 area. Letting agents and landlords in Sidcup and Bexley use us regularly for end-of-tenancy refreshes and planned maintenance.
Why Sidcup & Bexley homeowners choose The Mastic King
- Regular coverage across Sidcup, Bexley and all DA5–DA15 postcodes
- Experienced with 1930s and post-war housing stock common across the DA area
- Full silicone removal before every reseal — no overlap on old sealant, ever
- Razor-sharp finish using premium mould-resistant silicone
- Trusted by homeowners and landlords across Albany Park, Foots Cray and Bexley village
- Fully insured with a satisfaction guarantee on every job
Services available in Sidcup & Bexley
- Bathroom resealing — bath panels, basins, shower trays and tile-to-tile joints
- Shower enclosure and wet room silicone replacement
- Kitchen worktop, sink and splashback sealing — including granite and quartz surfaces
- Window and door frame mastic for uPVC and timber frames
- LVT and vinyl flooring edge and perimeter sealing
- Letting agent and landlord maintenance packages
Covering DA5, DA14, DA15 and all surrounding areas including Sidcup, Bexley village, Albany Park, Foots Cray and Blackfen.
Frequently asked questions — Sidcup & Bexley
How quickly can you get to Sidcup?
We cover Sidcup and Bexley regularly and can usually offer a same-day or next-day visit. Call or WhatsApp us and we'll confirm a time that suits you.
Do you remove the old silicone before applying new sealant?
Always. We fully strip the old silicone, clean and dry the surfaces, then apply fresh mould-resistant sealant. Applying new silicone over old is a shortcut we never take.
Do you cover Bexley village and Albany Park?
Yes — we cover Bexley village, Albany Park, Foots Cray, Blackfen and all surrounding DA postcodes.
Are you insured?
Yes — fully insured for public liability. You're in safe hands.
Do you work with landlords in the Sidcup area?
Yes — we carry out end-of-tenancy reseals and planned maintenance for a number of landlords and letting agents across the DA5, DA14 and DA15 postcodes.
Ready to book in Sidcup or Bexley?
WhatsApp us a photo and we'll give you a quote within the hour.