Na h-Eileanan Siar · Scotland
Window Mastic in Carloway
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Carloway. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Damp patches on the reveal after heavy rain
- White mastic on grey or black frames
- Gaps where the sill meets the wall
About our window mastic in Carloway
Frames and walls do not move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That is why the joint needs a flexible, low-modulus sealant rather than something rigid. We are often asked to deal with cracked or shrunken mastic around the frame and cracked internal joints between frame and plaster, across composite doors, patio & French doors and aluminium frames.
Outdoor sealant needs a dry surface, so window work around Carloway is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
All of our work is guaranteed for twelve months, in Carloway and everywhere else we cover.
- Where
- Carloway (HS2)
- Region
- Na h-Eileanan Siar
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Carloway homes and the weather
Carloway 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. Island jobs need planning around ferries and the weather, so the more notice, the better.
Around Carloway, as everywhere, window mastic is only as good as the preparation behind it.
Carloway (Gaelic: Càrlabhagh) is in Na h-Eileanan Siar. Every kind of property in Carloway is covered for window mastic. Every job comes with our one-year guarantee. Our area takes in 87 places across Na h-Eileanan Siar, from the larger towns to small villages.
Work in HS2 is quoted and booked the same way as anywhere else. Neighbouring places we cover for window mastic include Na Gearrannan (1 mile north-west), Shawbost (4 miles north-east), Breasclete (4 miles south), Bragar (6 miles north-east) and Barabhas (10 miles north-east). Island and remote addresses take a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
What’s near Carloway
Well-known places in the area include Gearannon Blackhouse Village (1.4 miles north-west). Open spaces near Carloway include Loch Langavat.
Places near Carloway
More services for Carloway
How we quote for window mastic
Your quote is based on your job. We look at:
- When we can work, for business premises
- The number of rooms or windows
- Access and height
- The number and length of the joints
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
What to tell us when you ask for a quote:
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
- Whether it has been sealed before
- Whether it’s a home or a business
To get a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
When something else is needed
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Faulty window hardware
- Draughts through the window seals rather than the frame
- A frame that has rotted at the joint
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think.
What we seal
- Patio & French doors
- uPVC windows
- Composite doors
- Timber windows & doors
- Aluminium frames
- Window sills
How the visit works
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it normally takes anything from an hour or two to a full day, depending on how many frames there are. Around Carloway, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Advice
Your questions about window mastic in Carloway
Is window mastic in a coastal place like Carloway any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Can you do window mastic in Carloway?
Yes, Carloway is within the area we cover. Our work covers the whole of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job.
I rent my home. Can I book you?
Yes. Check with your landlord; we can send the quote to them too.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Will there be a smell?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
Can I paint over the new sealant?
That depends on the product. Silicone isn’t paintable, but some hybrid sealants are. Mention any painting plans before we start.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Leave it or put it right?
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. In an older home around Carloway, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why book with us
- Sealant colour chosen to suit
- We never seal over old sealant
- Every job guaranteed for a year
- Colour agreed with you before any work starts
Take a look at our cost guide and what customers say.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Keep drainage slots and sill grooves clear
- Wipe condensation off the frames
- Avoid harsh chemicals near the mastic
- Keep paint and stain on wooden frames in good order
Silicone cannot usually be painted, so mention any painting plans before any work starts. We can use a paintable sealant where that matters.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
What we are called out for in Carloway
Timber windows bring their own problems. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
Most people get in touch when they notice something like this:
- Gaps between the frame and the inside reveal
- Gaps left after new windows were fitted
- Draughts coming in around windows and doors
- Cracked sealant at the sill ends
Whether the job is in Carloway itself or nearby, the right material for each joint matters as much as a neat finish.
Questions to ask before you book
- Is the old sealant removed completely?
- Whether they’re fully insured
- How the colour is chosen
- How long the guarantee is
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.