Renfrewshire · Scotland
Fire-rated sealant in Johnstone, Renfrewshire
Our applicators work in Johnstone on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old material cut out, joints cleaned and sealed neatly.
- Gaps around pipes and cables through fire-resisting walls
- Gaps where walls meet ceilings or slabs
- Cracked or shrunken fire-rated sealant
What affects the cost of fire rated sealant
The price is agreed before any work begins. It takes into account:
- The product the joint needs
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
- The size of the job
Doing several joints on one visit is generally more efficient than separate visits. We’ll give you a clear price for the lot.
Asking for a quote
To help us quote quickly, please include:
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- The problem you’ve noticed
- Any access issues, like height or stairs
There’s no standard price list. Instead, we give you a clear quote for your job. To arrange one, email us at info@mrmastic.co.uk.
Fire rated sealant in Johnstone
Intumescent sealant looks much like any other sealant until it gets hot; then it swells to help close the gap. The right product depends on the gap size, the substrate and what passes through, so we work to the manufacturer’s details. Common call-outs are for ordinary sealant used where a fire-rated product was needed and gaps flagged on a fire risk assessment, on flats & HMOs, pipe & cable gaps and door frames.
In a Scottish town like Johnstone, commercial work can mean offices, shops, schools, hotels or care homes, each with washrooms, kitchens and service openings that need the right sealant.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Johnstone (PA5, PA10)
- Wider area
- Renfrewshire
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Nearby places to Johnstone
Other services in Johnstone
Do you need fire rated sealant in Johnstone?
Gaps around door frames are easily missed. The gap between the frame and the wall is hidden behind the architrave, so it’s easy to leave unsealed when doors are changed.
It’s worth asking for a quote if you see:
- Sealant items on a fire risk assessment action list
- Gaps around pipes and cables through fire-resisting walls
- Ordinary sealant used where a fire-rated product was needed
- Old fire sealant that has split or come away
Rented homes near Johnstone station change hands often, and fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Comparing quotes
- What insurance they hold
- When the joint can take water or movement
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
Landlord and commercial work in Johnstone
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
How the job changes by surface
Plasterboard walls
We check that the board around the gap is sound. Crumbling edges are cleaned back before the sealant goes in.
Door frames
Frame gaps are usually hidden behind the architrave. Where it’s open, we seal it to the product’s details for that gap size.
Johnstone questions
Do you work for hotels and guest houses in Johnstone?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
I let a flat near Johnstone station. Can you help?
Yes, landlords and agents are among the people we work for. Just send an email to info@mrmastic.co.uk with the address and what needs doing, and we’ll give you a clear price.
Can you match the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Do you seal gaps around fire door frames?
Yes. Gaps behind architraves are a common job for us. Doors, seals and closers need a door specialist.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
Fire rated sealant around Johnstone
There are hotels and other places to stay in and around Johnstone. Hotel work can be planned room by room, with out-of-hours working where needed. Scotland has its own building regulations, the Building (Scotland) Regulations, with technical handbooks. Fire-rated sealant is installed to the manufacturer’s tested details, though we do not certify buildings or do fire risk assessments.
If you look after a church, hall or community building such as St John's Episcopal Chruch, service openings in its walls need the right fire-rated sealant, as in any building. Schools such as Linwood High School are buildings too, and service openings in fire-resisting walls need checking after any refurbishment.
Johnstone is about 3 miles west of Paisley, in Renfrewshire. If you need fire rated sealant in Johnstone, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We cover Renfrewshire from our Crawley base, Johnstone included. Our Renfrewshire coverage runs to 21 places, Johnstone among them. We also work in Glasgow, about 10 miles from Johnstone.
All of PA5 and PA10 is within our area for fire rated sealant, from the main roads to the quietest streets. We cover properties on Houstoun Square, High Street and Armour Square and the roads around them. Main roads around Johnstone include the A737 and B787, so getting to you is simple. If you’re just outside Johnstone, we cover Kilbarchan (1 mile west), Brookfield (1 mile north), Linwood (2 miles north-east), Howwood (2 miles south-west) and Craigends (2 miles north). Within a short drive, we also cover Paisley (3 miles east), Renfrew (6 miles north-east), Erskine (5 miles north-east), Bishopton (5 miles north), Glenburn (3 miles east) and Charleston (4 miles east).
Landmarks near Johnstone
In Johnstone, that means homes and buildings near Gleniffer Braes and 63 High Street pub, among other places. For rail, the closest station is Johnstone station, roughly 0.7 miles north-east of the centre. Well-known places in the area include Johnstone Community Museum (0.7 miles north) and Merchiston Hospital (1.1 miles north). For a walk, there’s Walls Loch and Walls Hill.
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes from a few hours to a few days, depending on the number of gaps and the access. For a job in Johnstone, tell us where the work is, how to get in and where to park. Outside work depends on the weather, as sealant needs a dry surface.
- Before starting, we go through the specification or action list with you.
- Each gap is measured and its substrate and service noted.
- Unsuitable material such as ordinary foam or silicone is cut out and the faces cleaned.
- The specified fire-rated sealant goes in over any backing its detail requires.
- We hand over a list of locations and products for your files.
How to prepare
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
Get a quote
Need a quote? Please email us at info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Doors that aren’t fire doors in the first place
- Sign-off of the building, which sits with building control or your assessor
- Deciding what fire stopping a building needs
If you’re not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Linear gaps
- Pipe & cable gaps
- Flats & HMOs
- Door frames
- Service penetrations
- Plasterboard & masonry