Inverclyde · Scotland
Gourock Window Mastic
Window mastic for Gourock, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Water coming in at the bottom corners of a door
- White mastic on grey or black frames
- Whistling draughts around closed windows
How we handle window mastic in Gourock
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that can’t move properly, so deep gaps get backing rod first. The sealant then grips the two sides it should. If you have cold air getting in at the frame edge and cracked internal joints between frame and plaster, we can put it right.
In and around a place like Gourock, homes range from older stone-built cottages to newer houses. Exposed frames and sills take the full force of wind-driven rain, so the mastic there works hard.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Gourock (PA19, PA16)
- Wider area
- Inverclyde
- Cover
- A year, on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Quotes for window mastic in Gourock
For a quick quote, just ask. What matters most is:
- Access and height
- How much there is to do
- Any mould that needs treating
- The number of rooms or windows
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
What to tell us when you ask for a quote:
- The address or postcode of the job
- Whether it has been sealed before
- The rough size of the job
- Access, such as stairs, a lift or height
To get a quote, email us at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Do you need window mastic in Gourock?
Sills take more water than any other part of a window, and the ends of the sill, where it meets the wall, are where it gets in. Failed sealant there lets rain into the wall or behind the frame.
Any of these means the joints need attention:
- White mastic on grey or black frames
- Gaps left after new windows were fitted
- Old mastic that has gone black or come away
- Cracked sealant at the sill ends
Homes close to Old Gourock Parish Church include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in.
Before booking anyone
- What preparation is included
- Whether VAT is included
- Whether all the old sealant comes out first
- What the cure time is
Landlord and commercial work in Gourock
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured for the work.
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Clear any debris from frame drain holes
- Clean frames with a soft cloth and soapy water
- Keep timber frames painted
- Avoid blasting the frames with a pressure washer
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. Resealing closes it.
What we do, step by step
When we arrive, we start by going over the job with you. Surfaces next to the work are protected before any work starts. Most jobs take a few hours for a handful of frames, longer for a whole house. For a place like Gourock, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Mention any sign-in or site rules at work premises
- Let us know if you’ve seen damp or leaks
- Tell us about any previous sealing or DIY attempts
How to get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will talk you through the work before giving you a price.
Related advice
Gourock questions
I let a flat near Gourock station. Can you help?
Yes, landlords and agents are among the people we work for. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we’ll send you a clear quote.
Do you cover smaller places like Gourock?
Yes, Gourock is covered. Our work covers the whole of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Do you guarantee window mastic?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Is it OK to seal over old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses, and we’re fully insured.
Are you insured?
Yes. We’re fully insured.
How the job changes by surface
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the threshold joint takes a lot of water. Each is cleaned, backed where deep and resealed.
Also near Gourock
Other services in Gourock
Gourock homes and the weather
Gourock is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Gourock is in the west of Scotland, which is wetter than the east, which means the mastic around window and door frames has to cope with a lot of rain.
Schools such as Gourock High School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Gourock station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Gourock is about 2 miles north-west of Greenock, in Inverclyde. Every kind of property in Gourock can book us for window mastic. Every job comes with our 12-month guarantee. Gourock is one of 19 towns and villages in Inverclyde we cover for window mastic. There’s also a page for Glasgow, about 22 miles away.
Every address in PA19 and PA16 is within our area for window mastic. Streets in the area include Station Road, Henderson Terrace and Darroch Drive, and we cover them all. Being close to the A770 and A771, Gourock is simple for us to get to for window mastic. Neighbouring places we cover for window mastic include Midton (1 mile west), Ashton (1 mile south-west), Braeside (1 mile south), Branchton (1 mile south) and Trumpethill (1 mile west). We also work in nearby towns such as Port Glasgow (6 miles east), Cartsdyke (3 miles east), Kilmacolm (8 miles south-east), Mid Auchinleck (6 miles east), Inverkip (4 miles south-west) and Bogston (4 miles east).
Around Gourock
Gourock’s nearest station is Gourock station, roughly 0.6 miles north of the centre. Well-known places in the area include Craigrownie Castle (2.9 miles north-west) and Oak Mall (2.3 miles east). Not far away are Lyle Hill and Loch Loskin.