West Sussex · England

Glazing & conservatory sealant in Crawley, West Sussex

Our applicators work in Crawley on glazing silicone for conservatories, rooflights, glass panels and shower screens. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.

  • Glazing silicone that has cracked or come away
  • New silicone smeared over old sealant
  • Water tracking down the inner face of the glass

Glazing silicone in Crawley

Glazing silicone in Crawley

Cracked, stained or lifting silicone on glass looks poor and can leak. It comes off cleanly, without marking the glass before the new bead goes in. If you have leaking glazing joints on a rooflight and cracked silicone between glass panels, we can put it right.

In Crawley, windows range from older timber frames to modern uPVC and aluminium, plus conservatories, patio doors and rooflights. Each needs the right sealant, and each joint wears out eventually.

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

Place
Crawley (RH10, RH11, RH12, RH6)
Region
West Sussex
Cover
One year on every job
Price
Quoted before any work starts
Call
0345 464 0079
Page updated
26 October 2026
Mr Mastic applicator sealing the top of a white uPVC door frame on a red-brick house

Common problems we fix in Crawley

Using a sealant not made for glass causes many failures. Not every silicone sticks properly to glass and vinegar-smelling acetoxy silicone can attack some metals.

People usually contact us when they notice one of these:

  • Water running down inside the glass
  • Leaks from the base of a shower screen
  • Rooflight joints letting water in
  • Mouldy sealant around glass panels

Managing a site like Three Bridges Junior School? Then larger buildings have plenty of frames, and the mastic around each one ages.

Before you book anyone

  • Whether the sealant suits the joint
  • Who does the work, and how experienced they are
  • Are they insured?
  • How the colour is chosen

10 questions to ask before booking

Landlords, agents and businesses in Crawley

Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.

We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.

Crawley homes and the weather

Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Crawley was built as one of England’s post-war new towns. Many homes date from the post-war decades, and many will have had their original windows replaced. That mastic ages as well, and sills and frame heads are where leaks start.

If you let a flat or house near Crawley station, glazing joints are worth checking at the end of a tenancy, before a small leak grows. In the older streets around Friary Church of St Francis and St Anthony, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.

Crawley is about 27 miles south of London, in West Sussex. Whether you are in the middle of Crawley or further out, we cover glazing silicone for every kind of property, from flats and houses to offices and hotels. Our West Sussex coverage runs to 371 places, and Crawley is one of them.

We work across the RH10, RH11, RH12 and RH6 postcode area for glazing silicone. We cover properties on Station Road, Queens Square and High Street. Crawley sits on or near the A23 and A264. Neighbouring places we cover for glazing silicone include Southgate (1 mile south-west), Tilgate (1 mile south-east), West Green (1 mile north), Three Bridges (1 mile east) and Langley Green (1 mile north). We also work in nearby towns such as Horsham (7 miles south-west), Haywards Heath (9 miles south-east), Burgess Hill (11 miles south), East Grinstead (8 miles east), Billingshurst (13 miles south-west) and Roffey (5 miles south-west). Crawley is among the bigger towns we cover in West Sussex.

Around Crawley

Around Crawley, our work takes us to homes and buildings near Tilgate Park, St Wilfrid's Catholic School and St Francis of Assisi Catholic Primary School and the streets around them. There’s a railway station in Crawley itself: Crawley station. Other landmarks nearby include Crawley Hospital (0.5 miles north-west) and County Mall (within half a mile north-east). Not far away are Tilgate Lake.

Map of Crawley © OpenStreetMap contributors

What we cannot put right

We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:

  • Frames that have decayed or split
  • Condensation trapped between two panes
  • A sagging or failing conservatory roof

If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer before you book.

Where we work in Crawley

  • Glass balustrade bases
  • Glass-to-frame joints
  • Rooflights
  • Glass-to-glass joints
  • Shower screens
  • Conservatory frames

What the job involves on each surface

Glass balustrade bases

We reseal the joint where the glass meets the base channel. We don’t install or replace glass.

Conservatory frames

Leaks often start where the frame meets the wall. We remove the failed sealant and renew it.

FAQs for Crawley

Is Crawley in your area for glazing silicone?

Yes. We work across London and the South East, and Crawley is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.

Do you work for landlords with property near Crawley station?

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

Is the work guaranteed?

There’s a 12-month guarantee on every job, glazing sealant included.

Can you reseal the base of a glass balustrade?

Yes, we reseal the joint at the base channel. We do not install or replace the glass.

Are you fully insured?

Yes. We’re fully insured, and we’ve been doing sealant work for more than 20 years.

Which products do you use?

It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.

Will it make a mess?

We keep the work tidy. We protect what’s around the joints.

How long should I leave it?

It depends on the product and the temperature. We tell you how long to leave it before we go.

Why act early in Crawley

A quick bead over the old sealant might stop a drip for a while, but silicone does not stick to silicone, and the leak normally returns. Cutting out and resealing properly lasts. For businesses in Crawley, a room closed because of a leak or mould costs more than the sealant, so failing joints are best replaced on a planned basis.

We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or send us an email and we will talk you through it.

Why Crawley customers choose us

  • Colour picked to suit the job
  • Experience in homes, commercial sites and hotels
  • Rated 4.9 stars on Google
  • We are fully insured

Take a look at what affects the cost and our reviews.

How it works

A visit follows a simple pattern: we check the joints, protect the area around them, do the work and tidy away. It normally takes anything from an hour or two to most of a day, depending on the size of the job. For homes and businesses in busier parts of Crawley, parking needs a little planning. Let us know about stairs, lifts or shared entrances too.

  1. We look at the glazing and agree which joints need resealing.
  2. We cut away the failed silicone.
  3. We clean and prepare the joint.
  4. We apply and tool the new silicone.
  5. We inspect the work and test it where we can.

Getting ready for the visit

  • Where the joints are inside, avoid wetting them before we arrive
  • For business premises, tell us about site rules or sign-in
  • Let us know about stairs, lifts or work at height

Getting a quote

Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.

Get a price

Read more

Aftercare tips

Joint life depends on how it’s used and looked after. We suggest:

  • Squeegee the shower screen after each use
  • Do not use a blade near the sealant
  • Use a gentle glass cleaner and a soft cloth
  • Do not leave a drip for the next storm

Follow the cure time we give you before the joints get wet. After that, clean glass with a mild cleaner.

Damp patches, drips and condensation along a joint are worth checking. It may be sealant, or something else, and we will tell you which.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job