East Sussex · England

Steven's Crouch Window Mastic

Our applicators work in Steven's Crouch on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.

  • Gaps where the sill meets the wall
  • Cracked or shrunken mastic around the frame
  • Water coming in at the bottom corners of a door

Window mastic in Steven's Crouch

Window mastic in Steven's Crouch, done properly

A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. We work on window sills, composite doors and patio & French doors, and the jobs we see most are mastic that has split away from the wall and untidy mastic left by window fitters.

Around Steven's Crouch, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.

There’s a 12-month guarantee on every job, whatever its size.

Place
Steven's Crouch (TN33)
Wider area
East Sussex
Guarantee
A year, on every job
Price
Quoted before any work starts
Call
0345 464 0079
Page updated
26 October 2026
Applicator reaching up to seal an external door frame on a sunny day

Your questions about window mastic in Steven's Crouch

Do you cover Steven's Crouch for window mastic?

Yes, Steven's Crouch is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.

Do you work for landlords with property near Battle station?

Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or send us an email with the details for a clear quote.

Will it make a mess?

No. The area is protected while we work and cleaned up afterwards.

What should I tell you?

The location, the problem and the rough size of the job. If you can, email a few photos.

How many windows can you do in a day?

The work takes anything from an hour or two to a full day, depending on how many frames there are. Access and how stubborn the old mastic is affect the time most.

Do you do commercial work?

Yes. Hotels, offices and other businesses use us and we’re fully insured.

Will new mastic stop draughts?

Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.

Are you insured?

Yes. We are fully insured, and we can confirm the details when we quote.

DIY versus a professional finish

If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.

Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.

What happens if it’s left?

Not every sealant suits a window. Decorators’ caulk and bathroom silicone aren’t designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Older cottages and farmhouses around Steven's Crouch can have timber floors and frames, and water through a failed joint can rot timber if it’s left.

Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll explain what it covers.

Why choose Mr Mastic in Steven's Crouch

  • White, clear, grey or another colour, product permitting
  • Arbo and Everbuild products
  • We leave the area clean and tidy
  • Experience in homes, commercial sites and hotels

Take a look at how sealant jobs are priced or our reviews.

What the job involves on each surface

Composite doors

Front doors take the weather head on. We pay most attention there.

Window sills

Where a sill meets brick or render, the ends often crack first. We reseal them so rain cannot run into the wall.

What affects the cost of window mastic

Your quote is based on your job. We look at:

  • Working hours on commercial sites
  • Mould in or behind the old joints
  • How many areas need sealing
  • How easy the joints are to reach

Doing several joints on one visit is generally more efficient than separate visits. We’ll give you a clear quote for the lot.

What to tell us for a quote

Photos help, but a description is a good start. Try to tell us:

  • What’s wrong with the joints now
  • Where the job is, and your postcode
  • Whether it has been sealed before
  • Photos by email, if that’s easy

If you’re in Steven's Crouch and need window mastic, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.

Do you need window mastic in Steven's Crouch?

Sun, frost and rain wear sealant out. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.

Most people get in touch after spotting something like this:

  • Hard, cracked sealant around windows
  • Gaps where the sill meets the wall
  • Rushed sealant from a window installation
  • Cold air getting in at the frame edge

Schools such as Claverham Community College are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.

Comparing quotes

  • Are they insured?
  • How the joint is cleaned and prepared
  • How long to leave it before use
  • What happens if they find a problem under the old sealant

Choosing a sealant specialist

What happens on the day

On the day, we start by going over the job with you. Surfaces next to the work are protected before work begins. Most jobs take a few hours for a handful of frames, longer for a whole house. In a small place like Steven's Crouch, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. We start by checking each window and door with you.
  2. We remove the old mastic and clean the frame and the wall.
  3. Where gaps are deep, backing rod goes in first.
  4. We apply a weatherproof sealant to match the frame and tool it neatly.
  5. Finally we tidy up and check each joint.

Before we arrive

  • Where the joints are inside, avoid wetting them before we arrive
  • Keep children and pets away from the work area
  • Let us know about stairs, lifts or work at height

Ask for a quote

To get a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.

Get a quick quote

Read more

Frames and glazing around Steven's Crouch

London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Durhamford Manor (about 4 miles north-east) are a reminder that the area around Steven's Crouch has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.

Historic houses such as Durhamford Manor, about 4 miles north-east, show how far back building around Steven's Crouch goes. For landlords with property near Battle station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.

Steven's Crouch is about 5 miles north of Bexhill-on-Sea, in East Sussex. For window mastic in and around Steven's Crouch, it’s easy to get a quote: please phone 0345 464 0079 or email us. We’re based in Crawley and cover East Sussex, Steven's Crouch included. Across East Sussex, we cover 289 places, Steven's Crouch among them. Brighton is on our list too, about 26 miles from Steven's Crouch.

Every address in TN33 is covered for window mastic. Window mastic is available to properties on Catsfield Road and Crowders Lane and the roads around them. If you’re just outside Steven's Crouch, we cover Penhurst (2 miles north-west), Battle (2 miles east), Netherfield (2 miles north), Mountfield (3 miles north-east) and Twelve Oaks (4 miles north-west). Within a short drive, we also cover Eastbourne (11 miles south-west), Hastings (6 miles south-east), Bexhill-on-Sea (5 miles south), Hailsham (9 miles west), Crowborough (15 miles north-west) and St Leonards (6 miles south-east).

What’s near Steven's Crouch

In Steven's Crouch, that means homes and buildings near Ashburnham Park. Steven's Crouch’s nearest station is Battle station, roughly 2.3 miles east. Nearby you will also find Bexhill Hospital (4.4 miles south) and Old Castle (4.6 miles north-west). Green spaces nearby include Senlac Hill and Church Wood and Robsack Wood.

Map of Steven's Crouch © OpenStreetMap contributors

When it is not the sealant

It helps to know what we cannot do too:

  • Damp problems in the wall away from the window
  • A sash or casement that won’t close properly
  • A failed sealed unit that has misted up

If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.

Where we work in Steven's Crouch

  • Window sills
  • Patio & French doors
  • Timber windows & doors
  • Composite doors
  • uPVC windows
  • Aluminium frames
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job