Wokingham · England

Wokingham Window Mastic

Window mastic across Wokingham and nearby, with every bit of old sealant taken out first.

  • Mastic that has split away from the wall
  • Old mastic that has gone black or come away
  • Rain getting in at the frame or under the sill

Trusted window mastic in Wokingham

What we can’t put right

We’ll always be straight with you, so here’s what new sealant will not do:

  • Misting between the panes of a double-glazed unit (that needs a new unit)
  • Faulty window hardware
  • Penetrating damp from a failed cavity tray or render

Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.

What we seal

  • Composite doors
  • Patio & French doors
  • Window sills
  • Aluminium frames
  • uPVC windows
  • Timber windows & doors

How we handle window mastic in Wokingham

A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty. If the draught is through the window seals instead, we’ll tell you. If you have cracked or shrunken mastic around the frame and water coming in at the bottom corners of a door, we can help, whatever the surface.

Plenty of homes in Wokingham are rented, and windows are easy to overlook between tenancies. Gaps around a frame let in draughts and water, and tenants notice.

Big or small, you get the same 12-month guarantee.

Applicator reaching up to seal an external door frame on a sunny day
Location
Wokingham (RG40, RG41, RG7, RG10)
Wider area
Wokingham
Guarantee
A year, on every job
Quotes
A clear price before work begins
Phone
0345 464 0079
Updated
26 October 2026

Frames and glazing around Wokingham

London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.

If you look after a building such as Walter Infant School, the mastic around its windows and doors needs looking after like any other building’s. Homes close to Church of St Paul include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.

Wokingham is about 33 miles west of London, in Wokingham. Wokingham gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 35 places across Wokingham, from the larger towns to small villages. Our Reading page covers work nearby, about 6 miles away.

All of RG40, RG41, RG7 and RG10 is covered for window mastic, from the main roads to the quietest streets. That includes homes and businesses on Station Road, Market Square and London Road and the roads around them. Wokingham is on the A321 and A329, which makes it straightforward to reach. Other places close to Wokingham include Woosehill (1 mile west), Emmbrook (1 mile north), Sindlesham (2 miles north-west), Winnersh (2 miles north-west) and Hurst (3 miles north). Within a short drive, we also cover Reading (6 miles north-west), Woodley (4 miles north-west), Earley (4 miles north-west), Crowthorne (3 miles south-east), Lower Earley (3 miles west) and Newtown (5 miles north-west).

What’s near Wokingham

Locally, jobs take us to homes and businesses close to The Holt School, St Crispin's School and The Station Tap. There’s a railway station in Wokingham itself: Wokingham station. Well-known places in the area include Berkshire Library & Museum of Freemasonry (1.9 miles north-west) and Wokingham Hospital (within half a mile east). Not far away are Heath Lake and Sonning Hill.

Map of Wokingham © OpenStreetMap contributors

Aftercare tips

Simple care keeps the joints in good condition. We recommend:

  • Keep paint off silicone joints
  • Avoid harsh chemicals near the mastic
  • Keep timber frames painted
  • Keep drainage slots and sill grooves clear

Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just phone 0345 464 0079 or email us.

Leaks usually show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.

Landlords, agents and businesses in Wokingham

Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.

Housing providers, facilities teams and property managers book us too in Wokingham. Several sites can be quoted together, and we are fully insured.

Can I do it myself?

Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.

If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.

When to call us in Wokingham

Mastic ages in the weather. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.

If you can see any of these, it’s time to have the joints looked at:

  • Leaking joints at the ends of sills
  • Damp patches on the reveal after heavy rain
  • Sealant in the wrong colour for the frame
  • Gaps between the frame and the inside reveal

For landlords with property near Wokingham station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.

What to look for in a quote

  • Are they insured?
  • Whether you can choose the colour
  • Is VAT in the price?
  • What preparation is included

10 questions to ask before booking

Your questions about window mastic in Wokingham

Can you do window mastic in Wokingham?

Yes. We work across London and the South East, and Wokingham is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear price.

I let a flat near Wokingham station. Can you help?

Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.

Can I do it myself?

That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.

Will the old sealant be removed?

Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.

Do you do commercial work?

Yes, regularly. Larger jobs can be planned room by room or area by area.

Does someone need to be in?

Access is agreed with you when the job is booked. Indoors, that generally means someone at home.

How do I get a quote for window mastic in Wokingham?

Size, access and the old material all affect the cost. Ask us for a quote.

Can new sealant go over the old?

No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.

The process

Before we leave, we go over the finished joints with you. The visit itself usually takes most of a day for a typical house, less for a few frames, depending on the size of the job. Jobs in a place the size of Wokingham range from town-centre flats to offices and family homes. For each, it helps to know about access, parking and where the joints are.

  1. We check each frame and agree which ones need doing.
  2. Next the failed sealant is cut away and the joint cleaned.
  3. Deep gaps are filled with backing rod to set the depth.
  4. A flexible, weatherproof sealant is applied in a colour to suit the frame.
  5. We clear up and check every joint is fully closed.

Getting ready for the visit

  • On commercial sites, let us know about site rules
  • Tell us about access, such as stairs, a lift or high-level joints
  • Plan for the work area to be out of bounds to pets and children

Get a quote

To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.

Get a quick quote

Advice

Why it’s worth doing now in Wokingham

Getting a straight, even bead on an outside frame takes practice, especially on upper floors. We cut out properly, back deep gaps and tool every joint neatly, using a product chosen for the frame and wall. In flats, shops and offices in Wokingham, a failed joint can let water into the unit below or behind a wall, where it can go unnoticed until the damage is done.

No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.

What you get with us

  • Any old sealant cut out fully, not covered over
  • Homes, businesses and hotels
  • Every job guaranteed for a year
  • Colour agreed with you before any work starts

See what affects the cost and customer reviews.

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