Portsmouth · England
External Mastic in Paulsgrove
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Paulsgrove and across Portsmouth. Fully insured, ARBOMaster approved and guaranteed for a year.
- Plants rooting in failed movement joints
- Brick movement joints where the sealant has split
- Water getting into walls through failed joints
External mastic in Paulsgrove
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on render & cladding joints, concrete & block and brickwork movement joints, and common reasons people get in touch are joints where the bead has come unstuck and joints with sealant missing in places.
Homes around Paulsgrove range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
A 12-month guarantee comes as standard, so you’re covered after we have gone.
- Place
- Paulsgrove (PO6)
- Wider area
- Portsmouth
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Do you need external mastic in Paulsgrove?
If plants are growing out of a joint, the sealant has normally failed or was never there. Dirt and roots then trap moisture in the joint and speed up the damage.
If you can see any of these, it’s time to have the joints looked at:
- Cracked joints where brick meets render or frames
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
- Damp patches traced to an open external joint
Managing a site like Beacon View Primary Academy? Then its movement joints, gutters and trims need looking after like any other building’s.
Comparing quotes
- How the joint is cleaned and prepared
- Who turns up on the day
- What guarantee comes with the work
- Which sealant they’ll use, and why
What the job involves on each surface
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind.
Towns and villages near Paulsgrove
What else we do in Paulsgrove
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
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 that we can handle for you.
What we do, step by step
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the building in most cases. For a job in Paulsgrove, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Where the joints are inside, avoid wetting them before we arrive
- On commercial sites, let us know about site rules
Get a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear price before any work starts.
Advice
Honest limits
It helps to know what we can’t do:
- Subsidence or other structural problems
- Adding movement joints to masonry that has none
- Render that is blown, hollow or coming away
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Where we work in Paulsgrove
- Copings & trims
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
Walls and rooflines in Paulsgrove
Paulsgrove is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Cosham station, split movement joints are easy to miss on a rental until damp shows inside. In the older streets around St Michael and All Angels, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Paulsgrove is about 3 miles north of Portsmouth, in Portsmouth. For external mastic in and around Paulsgrove, it’s easy to get a quote: please call 0345 464 0079 or email us. We’re based in Crawley and cover Portsmouth. Our area takes in 19 places across Portsmouth, from the larger towns to small villages.
Postcode districts we cover here for external mastic: PO6. If you need external mastic at a property on Bourne Road, Ludlow Road and Farmlea Road or a nearby road, our applicators can take on the job. You’ll find Paulsgrove on the M27 and A27, which makes it straightforward to reach with everything needed for external mastic. Neighbouring places we cover for external mastic include Wymering (1 mile east), Cosham (1 mile east), Hilsea (2 miles south-east), Widley (2 miles east) and Purbrook Heath (2 miles north-east). We also work in nearby towns such as Portsmouth (3 miles south), Southsea (5 miles south), Milton (4 miles south), Landport (3 miles south), Baffins (3 miles south-east) and Portsea (4 miles south).
Local landmarks in Paulsgrove
In Paulsgrove, that means homes and buildings near Alexandra Park, The Sir Alec Rose pub and Castle View Academy. The closest station to Paulsgrove is Cosham station, about 1.2 miles south-east. A little further out are Queen Alexandra Hospital (1.1 miles east) and World War I Remembrance Centre (2.2 miles south-east). Not far away are Southmoor Nature Reserve and Portsdown Hill.
DIY versus a professional finish
What a professional job adds is preparation and the right 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.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
FAQs for Paulsgrove
Do you cover smaller places like Paulsgrove?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Does living near the coast affect external mastic in Paulsgrove?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are generally the first to need attention.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides.
How long does external mastic take?
It depends on the size of the job, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We will give you a better idea when we quote.
Will there be a smell?
There can be a smell while the sealant cures. Opening a window helps.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
How much does external mastic cost in Paulsgrove?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or drop us an email with a short description of the job.
Quotes for external mastic in Paulsgrove
There’s no set price list. The quote depends on:
- When we can work, for business premises
- The product the joint needs
- Any mould that needs treating
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
Helping us quote
To help us quote quickly, let us know:
- The rough size of the job
- What’s wrong with the joints now
- Whether it has been sealed before
- The type of property
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.