South East England and London
External Mastic in Portsmouth
From the largest town to the smallest village in Portsmouth, our applicators can help with external mastic. Clear quotes up front, and a one-year guarantee.
External mastic across Portsmouth
Sealing brickwork movement joints, render, cladding and façade joints. Pick your town below to see the details for your area, or call or email us for a quick quote.
Main towns
Other services in Portsmouth
- Bathroom & kitchen resealing
- Remedial sealant & repairs
- Regrouting
- Sand mastic for sash & case windows
- Floor & skirting joints
- Gutter, fascia & soffit sealing
- Window & door mastic
- Fire-rated sealant
- New-build mastic & snagging
- Glazing & conservatory sealant
- Commercial & hotel sealant
Postcodes in Portsmouth
Our external mastic service in Portsmouth
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. We work on copings & trims, concrete & block and brickwork movement joints, and people most often call us about sealant that has lost its bond to the brick or render and damp patches traced to an open external joint.
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
What you’ll pay
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why customers in Portsmouth choose us
- Colour picked to suit the job
- Homes, businesses and hotels
- Arbo and Everbuild products
- Neat joints and a tidy finish
Get a quote
Need a quote? Please call 0345 464 0079 or email us with a few details. We’ll explain what we’d do and send you a clear quote before any work starts.
What’s near Portsmouth
We work in homes and buildings around Manor Infant School, Alexandra Park and St Wilfrid, among other places. You’ll also find The Druids Arms (within half a mile north-east), The Portsmouth Academy (within half a mile south-east) and St Edmund's Catholic School (0.7 miles south-west). The nearest railway station is Fratton station, about 0.9 miles south. Nearby you will also find Royal Portsmouth Hospital (0.7 miles south-west) and Charles Dickens Birthplace Museum (under half a mile west). Not far away are Milton Locks and Portsdown Hill.
Outside joints across Portsmouth
Homes across Portsmouth range from older brick and stone to modern render and cladding. Where two materials meet is where water normally gets in, wherever the building is in Portsmouth.
Hard water across most of the South East leaves limescale on sealant, grout and fittings. Whatever the job in Portsmouth, surfaces are cleaned back properly before new sealant goes in. Along the coast in Portsmouth, holiday lets and guest houses can have bathrooms in near-constant use, which is hard on sealant and grout.
Portsmouth: Rented homes near Fratton station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. For an older house near a landmark such as St Wilfrid, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Looking after it afterwards
Looking after new joints is easy:
- Keep water from gutters off the wall
- Show decorators and builders where the movement joints are
- Keep high-pressure jets off the joints
- Leave the joints unpainted unless we have said otherwise
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Act while the splits are small. Then it’s a straightforward cut-out and reseal.
Quotes for external mastic in Portsmouth
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The type of sealant required
- How much there is to do
- The old material and how stubborn it is
- Access and height
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
What we need to know
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- Where the property is
- The type of property
- Photos by email, if that is easy
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
When it isn’t the sealant
Before booking, it’s worth knowing the limits too:
- Adding movement joints to masonry that has none
- Rising or penetrating damp from elsewhere in the wall
- Movement that’s more than a sealant joint can take
Why deal with it now?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself.
Questions to ask before you book
- Whether VAT is included
- Who does the work, and how experienced they are
- How long the guarantee is
- Whether they seal over old material or remove it
Landlord and commercial work in Portsmouth
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Portsmouth: your questions answered
Can landlords and businesses book you?
Yes. We work for householders, landlords, letting agents, businesses and hotels.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
How often do external joints need resealing?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Our work comes with a one-year guarantee.
Can I add another job to the visit?
Yes. More than one area can be quoted together.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
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’ll explain our choice.