Windsor and Maidenhead · England
Gutter, fascia & soffit sealing in Cold Harbour, Windsor and Maidenhead
Gutter sealing for Cold Harbour, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Drips from gutter joints and end caps
- Stop ends leaking at the end of a run
- Old sealant on roofline trims that has split
Cold Harbour buildings and the weather
With historic houses such as Harleyford Manor (about 3.3 miles north) nearby, there’s older building stock in the area around Cold Harbour as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Saint Peter, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like Knowl Hill Church of England Primary Academy? Then larger buildings have long runs of movement joint that eventually need resealing.
Cold Harbour is about 3 miles west of Maidenhead, in Windsor and Maidenhead. Homes, rented property, offices and hotels in Cold Harbour can book us for gutter sealing, old or new, large or small. The work is guaranteed for a year. Our Windsor and Maidenhead coverage runs to 57 places, Cold Harbour among them. For nearby work, see our Reading page (9 miles or so).
Every address in SL6 is covered for gutter sealing, from the main roads to the quietest streets. Neighbouring places we cover for gutter sealing include Knowl Hill (1 mile north-west), Warren Row (1 mile north-west), Bowsey Hill (2 miles west), Cockpole Green (3 miles north-west) and Wargrave (3 miles west). Further out, we also cover Maidenhead (3 miles east), Windsor (8 miles east), Boyn Hill (3 miles east), North Ascot (8 miles south-east), Cookham (5 miles north-east) and Furze Platt (3 miles north-east).
What’s near Cold Harbour
We work in homes and buildings around Cox Green School and The Royal Oak pub. The nearest railway station is Wargrave station, roughly 3.3 miles west. Other landmarks nearby include St Mark's Hospital (2.8 miles north-east). Green spaces nearby include Hurley Chalk Pit and Taplow Lake.
About our gutter sealing in Cold Harbour
Open fascia and soffit joints spoil the roofline and can let weather in. We seal them in a colour to suit where one is available. Typical jobs include stop ends leaking at the end of a run and cracked sealant along roofline trims, on gutter end caps, gutter joints and soffit joints.
Somewhere as small as Cold Harbour, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Place
- Cold Harbour (SL6)
- Region
- Windsor and Maidenhead
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Clean out the gutters once or twice a year
- Look at the gutters while it’s raining
- Keep ladders off the guttering
- Get leaks sealed before the wet months
Keep downpipes clear, so water can get away. A blocked pipe backs water up to the joints.
If an end cap is dripping, deal with it before winter. A winter of drips can lead to damp patches inside.
How it works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a few hours, depending on the number of joints and the access, including the tidy-up. In a small place like Cold Harbour, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the gutters, fascias and trims and agree the joints to seal.
- We clean out each joint.
- We make sure everything is dry.
- We apply exterior or gutter sealant and finish it neatly.
- The joints are checked once sealed.
Before we arrive
- Tell us if parking is tricky
- Mention if the joints have been sealed before
- Move anything stored near the joints
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or send us an email and describe the job, and pictures are welcome.
Read more
Surface by surface
uPVC fascias
We seal fascia joints, not replace the boards. If boards are damaged, we will tell you.
Gutter end caps
End caps take the pressure of water running along the gutter. When their seal fails, they drip.
What sealant work can’t fix
It helps to know what we cannot do:
- Roof leaks, slipped tiles or failed flashing (a roofer’s job)
- Boards that have decayed or split
- Sagging gutters or broken brackets
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Joints and surfaces we work on
- Gutter end caps
- Gutter joints
- uPVC fascias
- Roofline trims
- Garage door frames
- Soffit joints
Also near Cold Harbour
Also in Cold Harbour
Leave it or put it right?
You do not need to replace a garage door because rain gets in round the frame. Resealing the frame joint is often enough, if the frame itself is sound. Around Cold Harbour, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why choose Mr Mastic in Cold Harbour
- We leave the area clean and tidy
- Experience in homes, commercial sites and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
- Full insurance on every job
Take a look at our cost guide or what customers say.
Common questions in Cold Harbour
Do you work for landlords with property near Wargrave station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
Do you cover Cold Harbour for gutter sealing?
Yes. Our work covers London and the South East, and Cold Harbour is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
What does gutter sealing cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before work begins.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or send us an email.
Is it possible to stop a gutter joint dripping with sealant?
Generally, if the gutter is sound. The joint is cleaned and dried first so the sealant bonds.
Do you have insurance?
Yes, we are fully insured.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will tell you what we’re using.
Do you need gutter sealing in Cold Harbour?
When a gutter sags, its joints open. Sealing will not hold if the gutter keeps dropping so the brackets need attention first.
Look out for these signs:
- Leaking gutter joints and stop ends
- Water running down the wall below the gutter
- Stop ends leaking at the end of a run
- Quick sealant fixes on gutters that didn’t last
If you let a flat or house near Wargrave station, leaking gutter joints on a rental are best caught before they stain the walls.
What your quote should include
- What happens if they find a problem under the old sealant
- How the joint is cleaned and prepared
- When the joint can take water or movement
- Who does the work, and how experienced they are
What affects the quote in Cold Harbour
Jobs vary more than people expect. The main factors:
- When we can work, for business premises
- Any mould that needs treating
- How much there is to do
- How easy the joints are to reach
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us and we will talk you through it.
Asking for a quote
When you contact us, these details help:
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
- Photos by email, if that’s easy
- How many joints, rooms or windows are involved
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.