Argyll and Bute · Scotland
Lochgoilhead Sand Mastic
Professional sand mastic in and around Lochgoilhead, with old sealant always removed completely.
- Old cement repairs round a window that have failed
- Mastic that needs renewing before redecorating
- A silicone bead on a sash window that spoils the look
How the visit works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself usually takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. Somewhere like Lochgoilhead may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Tell us if parking is tricky
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Related advice
Sand mastic in Lochgoilhead
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. We work on tenement windows, timber door frames and stone surrounds, and the jobs we see most are patchy fillers round a sash window and mastic round period door frames that has failed.
In and around a place like Lochgoilhead, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill, so the mastic there works hard.
All of our work is guaranteed for twelve months.
- Location
- Lochgoilhead (PA24)
- Wider area
- Argyll and Bute
- Cover
- A year, on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
FAQs for Lochgoilhead
Is sand mastic in a coastal place like Lochgoilhead any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Is Lochgoilhead within the area you cover?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
What’s sand mastic made of?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Do you work for landlords and businesses?
Yes, often. We can quote for several properties at once, and between tenancies is a good time for the work.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours per window, depending on the condition of the joints. We will give you a better idea when we quote.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first.
Do you need sand mastic in Lochgoilhead?
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber and we normally remove them.
People generally contact us when they notice one of these:
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
- Window mastic to renew ahead of painting
- Cracked mastic round a front door frame
In and around Lochgoilhead, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- How long the guarantee is
- Whether they’re fully insured
- What happens if the job turns out different
- How the surfaces are prepared before sealing
Windows and doors in Lochgoilhead
Lochgoilhead is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
If you live in an older home near Church of The Three Holy Brethren, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Lochgoilhead is about 13 miles north-west of Helensburgh, in Argyll and Bute. Homes, rented property, offices and hotels in Lochgoilhead can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. 118 places in Argyll and Bute are on our list, from the larger towns to small villages. Our Glasgow page covers work nearby, about 33 miles away.
We work across the PA24 postcode area for sand mastic. Whether your property is on Donich View and Donich Park or a nearby road, we can help. Nearby, we also carry out sand mastic in Cairndow (6 miles north), Portincaple (6 miles south-east), Arrochar (6 miles east), Succoth (6 miles east) and Strachur (6 miles west). We also work in nearby towns such as Helensburgh (13 miles south-east), Dunoon (15 miles south), Rhu (12 miles south-east), Sandbank (14 miles south), Inbhir Aora (8 miles north-west) and Inveraray (8 miles north-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
What’s near Lochgoilhead
Other landmarks nearby include Carrick Castle (4.6 miles south). Not far away are The Steeple and Corran Lochan.
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Putty and glazing repairs
- Decayed frames that need repair
- Whether work needs listed building consent
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Sash and case windows
- Timber door frames
- Period & listed homes
- Tenement windows
- Stone surrounds
- Brick reveals
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Ask the planning authority about consent for listed or conservation-area homes
- Sort the mastic before the decorators arrive
- Take care around the mastic when scraping paint
- Get any rot dealt with first
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Nearby places to Lochgoilhead
Also in Lochgoilhead
Different surfaces, different methods
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Landlords, agents and businesses in Lochgoilhead
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.