Kent · England

Mastic man in Sevenoaks

Careful resealing and window mastic for Sevenoaks homes, from older houses near the town centre to commuter homes and flats close to the station.

  • Fully insured
  • Arbo and Everbuild sealants
  • Clear quote before we start

Need a mastic man in Sevenoaks?

Your local mastic man for Sevenoaks

Sevenoaks is a market town with a long history, a big commuter population and some very well-kept houses, so homeowners here tend to notice a tired sealant joint straight away. We work across the town as a mastic man in Sevenoaks, resealing baths, showers, basins and kitchens, renewing window and door mastic and sealing the external joints that keep the weather out.

We’re based in Crawley and cover Sevenoaks and its neighbouring villages. In a home with expensive tiling or natural stone, the finish matters as much as the seal, so we take time over colour, bead size and clean lines. Our colour-matched resealing page explains how we choose a shade to suit your tiles and worktops.

Old town, Victorian villas and commuter homes

Sevenoaks grew steadily through the 19th century. The St John’s Hill area was developed for housing between about 1840 and 1880, and the railway arrived in 1862, with Bat and Ball station first and Sevenoaks station following in 1868. The district council has designated several conservation areas in the town, including Kippington and Oakhill Road and Vine Court. Older properties often have mixed materials, brick, stone dressings and tile, and the joints between a frame and the wall around it are rarely straight or even.

That matters for sealant. A deep, uneven gap around a window needs backing rod and a flexible mastic, not a thick smear that cracks within a season. Inside, larger period houses often have several bathrooms, some of them in converted attics or over older timber floors that move as they are used.

Many Sevenoaks homes have had high-end kitchens and bathrooms fitted, with stone worktops, frameless screens and large-format tiles. Those deserve careful work. We remove old silicone without scratching the surface, use a food-safe product by the sink, and match the colour so the joint sits quietly against the finish.

Mr Mastic applicator kneeling beside a white bath, sealing the joint where the bath meets beige wall tiles
Mr Mastic applicator kneeling beside a white bath, sealing the joint where the bath meets beige wall tiles
Map of Sevenoaks © OpenStreetMap contributors

Weather on the hills around Sevenoaks

Outdoors, the weather can be rough on high, exposed ground. Wind-driven rain finds any gap in old mastic around windows, door frames and roof abutments. We check sills and frame corners, cut out sealant that has hardened, and fit weatherproof joints sized to move. Our guide to how long silicone sealant lasts explains when it’s time to replace it.

Schools, offices and lettings

Sevenoaks has a notable cluster of schools, including Sevenoaks School, founded in 1432, as well as Walthamstow Hall, The Granville School, Knole Academy and Trinity School. Boarding houses, sports changing rooms and staff kitchens all have sealant that wears. School work is easiest to plan for half-terms and holidays, and we’re happy to fit around that.

The town centre also has offices, shops and restaurants, and the strong rental market means landlords and letting agents often need a quick turnaround between tenants. Our landlord sealant service covers single homes and portfolios.

How a job runs

  1. Get in touch. Call or email with the job, your postcode and a few photos if you have them.
  2. Get a clear quote. We give you a clear price before any work starts, and agree a date with you.
  3. Preparation first. Old sealant out completely, surfaces cleaned, mould treated and the joint left dry.
  4. Neat new sealant. Each joint gets the sealant that suits it, laid and smoothed to a tidy finish.
  5. Guaranteed work. You’ll know the cure time before we leave, and every job comes with a one-year guarantee.

What we do in Sevenoaks

  • Bathroom & kitchen resealing: Every joint in the bathroom and kitchen, from the bath edge to the worktop, stripped back and resealed with anti-fungal silicone.
  • Window & door mastic: Hardened, gappy mastic around frames, sills and French or patio doors cut out and renewed to keep draughts and rain out.
  • Commercial & hotel sealant: Commercial washrooms, kitchens and wet areas resealed floor by floor, so only a few rooms are out of use at once.
  • Remedial sealant & repairs: Messy, layered or wrong-product sealant cut out and replaced with the right sealant, laid the right way.
  • Fire-rated sealant: Fire-rated sealant for service penetrations and frame gaps where it has been specified, applied to the tested details.
  • External & façade joints: Expansion joints in brick, render and cladding cut out and renewed at the right depth so they can move without splitting.
  • New-build mastic & snagging: Failed builder sealant in new homes put right, and plot mastic for developers.
  • Floor & skirting joints: Skirting-to-floor gaps, tiled floor movement joints and concrete floor joints sealed with the right product.
  • Regrouting: Crumbling grout in showers and wet areas raked out and refilled, so water stays out of the wall behind.
  • Glazing & conservatory sealant: Leaking conservatory and rooflight joints, glass panels and shower screens resealed with silicone made for glass.
  • Gutter, fascia & soffit sealing: Gutter unions, outlets and fascia joints that leak in heavy rain cleaned and resealed.
  • Sand mastic for sash & case windows: Sash and case window surrounds in stone and brick re-pointed with traditional sand mastic.

Why Mr Mastic in Sevenoaks

Homeowners in Sevenoaks often ask who will actually do the work and what products they will use. The answer is an insured, ARBOMaster approved applicator with over 20 years in the trade, using Arbo and Everbuild sealants rather than whatever is on the van. Our record runs to 2,847+ projects and a 4.9-star Google rating built on 180+ five-star reviews. You’ll know the cost from a clear quote up front, and the finished job carries a one-year guarantee.

Around Sevenoaks

For trains, Sevenoaks station is closest to the centre. Local landmarks include Sevenoaks Museum (0.8 miles south-east) and Kemsing Castle Bank (2.6 miles north-east). Typical jobs near the centre are in homes and businesses around Sevenoaks Primary School, Knole Academy, New Beacon School and St John the Baptist. For open space, Dryhill Nature Reserve is close by.

What customers say

Rated 4.9 on Google from 180+ five-star reviews. Read the reviews on Google.

★★★★★
“1950s terrace on Crossways — bath had black mould coming back constantly. Mr Mastic stripped it all back and did it properly. Bathroom looks brand new.”
Paul D., Crossways, Three Bridges
★★★★★
“New build in Forge Wood — shower seal had failed after 16 months. Mr Mastic came out quickly, removed everything and did it properly. Perfect finish and no more leaks.”
Anna P., Forge Wood, Crawley
★★★★★
“Harper Drive in Maidenbower — kitchen worktop had been leaking behind for a while. Came out the next day, sorted it properly. Really tidy job.”
Sarah K., Harper Drive, Maidenbower
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job

Sevenoaks: common questions

Do you cover Sevenoaks and the villages nearby?

Yes. We cover the town and the surrounding villages from Crawley. Send us your postcode and we’ll arrange a time.

Can you match sealant to stone worktops and large-format tiles?

Yes. We carry a range of colours and will suggest the closest match, with a food-safe product next to the sink.

I live in a conservation area. Can you reseal my old windows?

Yes. Resealing existing frames is usually straightforward. We can use a paintable sealant where the joint will be painted to match.

Will removing old silicone damage my shower screen?

We take care to remove old sealant without scratching glass, chrome or tiles, using the right tools and removers for each surface.

Can you work at a school during the holidays?

Yes. We’re happy to plan school work for half-terms and holidays so pupils and staff aren’t disrupted.

Is the work guaranteed?

Yes. Every job comes with our one-year guarantee.

Can you reseal a kitchen sink and worktop on the same visit?

Yes. We often do a kitchen and a bathroom together. Near the sink we use a food-safe sealant, and we match the colour to the worktop where we can.

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