Slough · England

Gutter, fascia & soffit sealing in Slough

Gutter sealing in Slough from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.

  • Damp patches inside below a leaking gutter
  • Rain getting in around a garage door
  • Leaking gutter joints and stop ends

Trusted gutter sealing in Slough

Gutter sealing in Slough

It’s easy to live with a dripping gutter joint, but the water lands on the same spot every time it rains. Resealing it is a small job if the gutter is otherwise in good order. Typical jobs include damp patches inside below a leaking gutter and garage door frames letting rain in, on gutter joints, gutter end caps and uPVC fascias.

Larger buildings in Slough have plenty of movement joints, cladding joints and roofline trims. A failed joint lets water behind the brick or render, where it often goes unnoticed for a while.

The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.

Applicator reaching up to seal an external door frame on a sunny day
Place
Slough (SL1, SL3, SL2, SL6)
Region
Slough
Cover
One year on every job
Quotes
A clear price before any work starts
Call
0345 464 0079
Page updated
26 October 2026

How the job changes by surface

Roofline trims

Sealing roofline trims is joint work only. Roofing problems need a roofer.

uPVC fascias

We seal fascia joints, not replace the boards. If boards are damaged, we’ll tell you.

Honest limits

It helps to know what we can’t do too:

  • Boards that have decayed or split
  • Leaks from the roof rather than a joint
  • Guttering that needs replacing

Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before you book.

What we seal

  • Gutter end caps
  • Gutter joints
  • Garage door frames
  • Roofline trims
  • Soffit joints
  • uPVC fascias

How we quote for gutter sealing

There’s no set price list, because no two jobs are the same. The quote depends on:

  • Whether old sealant or filler has to be cut out
  • Whether there’s mould to deal with
  • The number of rooms or windows
  • Whether the work is at height

What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.

What to tell us for a quote

When you contact us, it’s useful to know:

  • Access, such as stairs, a lift or height
  • If it’s domestic, commercial or a hotel
  • Pictures of the joints, sent by email
  • Where the property is

We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or drop us an email with the details and send photos if you have them.

Looking after it afterwards

Simple care keeps the joints in good condition. Our advice:

  • Rest ladders on the wall, not the gutter
  • Clear leaves and moss from the gutters
  • Glance at the soffit joints now and then
  • Look for streaks or damp on the wall below gutters

Make sure downpipes are not blocked, so water can get away. Blockages push water back along the gutter.

Once roofline sealant splits, water can get behind it. Sealing it early keeps the boards behind dry.

Slough: your questions answered

What guarantee comes with gutter sealing in Slough?

All our work, in Slough and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.

Do you work for landlords with property near Slough station?

Yes. We work for letting agents and landlords as well as householders. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.

Do you hold any approvals?

Yes. We’re an ARBOMaster approved applicator.

Where are you based?

Mr Mastic is based in Crawley. Our applicators cover Slough.

How much does gutter sealing cost in Slough?

The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.

What about gutters on a second or third storey?

Low-level work is easiest. We’ll confirm the access for higher gutters once we know more.

Can you seal over the old sealant?

No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.

Do you do commercial work?

Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.

Leave it or put it right?

A bead squeezed onto a wet joint might hold for a while but it tends to peel off. Proper preparation is the difference. In a large rental market like Slough, tired sealant leads to tenant complaints about mould, damp and leaks. Sorting it between tenancies is easier than dealing with it mid-let.

Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.

Why book with us

  • Neat joints and a tidy finish
  • Full insurance on every job
  • 180+ five-star Google reviews
  • A 12-month guarantee on all work

See our cost guide or our reviews.

How the visit works

The work is kept neat and contained to the area we are working on. The job normally takes anything from an hour or two to a few hours, and we tell you how long to leave it before we go. In Slough, we work in everything from flats and family homes to offices and hotels. For each, it helps to know about access, parking and where the joints are.

  1. We find where the water is coming from and check the gutter is sound.
  2. The old sealant and dirt are cleaned out of the joint.
  3. The joint is dried before sealing.
  4. A gutter sealant is applied to the joint.
  5. The gutter is checked and debris around the joints cleared.

Getting ready for the visit

  • Keep children and pets away from the work area
  • Let us know if you’ve seen damp or leaks
  • Mention any parking rules near the property

Getting a quote

It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or send us an email.

Get a price

Read more

Gutter sealing in Slough: local notes

The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Windsor Castle (about 2.1 miles south) nearby, there’s older building stock in the area around Slough as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.

Managing a site like Herschel Grammar School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to St Michael and All Angels include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. For landlords with property near Slough station, a dripping gutter joint or loose fascia trim is easy to miss until damp shows inside.

Slough is about 22 miles west of London, in Slough. Every kind of property in Slough is covered for gutter sealing. Every job comes with our one-year guarantee. Our area takes in 31 places across Slough, from the larger towns to small villages. For nearby work, see our Reading page (17 miles or so).

Here we cover the SL1, SL3, SL2 and SL6 postcode area for gutter sealing. Gutter sealing is available to properties on High Street, Station Road and London Road. Being close to the A4 and A332, Slough is easy for our applicators to reach for gutter sealing. Nearby, we also carry out gutter sealing in Chalvey (1 mile south), Cippenham (1 mile west), Britwell (1 mile north-west), Farnham Royal (2 miles north) and Huntercombe (2 miles west). Larger places within reach include Datchet (3 miles south-east), Farnham Common (3 miles north), Poyle (5 miles south-east) and Colnbrook (4 miles south-east).

Around Slough

In Slough, that means homes and buildings near Westgate School, Herschel Park and The Moon and Spoon pub. The closest station to Slough is Slough station, roughly 0.7 miles east. Well-known places in the area include Upton Hospital (0.9 miles south-east) and Windsor Castle (2.1 miles south). Not far away are Taplow Lake and Burnham Beeches.

Map of Slough © OpenStreetMap contributors

Landlord and commercial work in Slough

Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.

Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.

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