Hampshire · England
External Mastic in Rogate
We cover Rogate for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Sealant that has lost its bond to the brick or render
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
External mastic for homes and businesses in Rogate
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two. Typical jobs include movement joints filled with mortar instead of sealant and sealant pulling away from one side of the joint, across copings & trims, brickwork movement joints and render & cladding joints.
Outside joints can only be sealed when they’re dry, so work in Rogate is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Whatever the size of the job, it’s backed by our 12-month guarantee in Rogate and across Hampshire.
- Location
- Rogate (GU31)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
Running new sealant over the old bead rarely lasts. New sealant does not bond well to old, weathered sealant, so the old joint is cut out fully first. Around Rogate, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Why choose Mr Mastic in Rogate
- An ARBOMaster approved applicator
- 4.9 on Google from 180+ five-star reviews
- Anti-fungal sanitary silicone in wet areas
- We’re fully insured
See our cost guide or customer reviews.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Tell anyone working on the walls about the movement joints
- Keep high-pressure jets off the joints
- Make sure movement joints are not pointed over
- Ask before painting over external sealant
Do not let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
The process
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work begins. The work normally takes anything from a few hours to several days, depending on the building. Somewhere like Rogate needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
- Mention any tricky access
Ask for a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Related advice
FAQs for Rogate
Do you work for landlords with property near Liss station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Can you do external mastic in Rogate?
Yes. Our work covers London and the South East, and Rogate is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Is it OK to fill a movement joint with cement?
No. Cement or mortar can’t stretch, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.
Are you fully insured?
Yes. We are fully insured for every job we do.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
How we quote for external mastic
The quote reflects the job in front of us. We take into account:
- How easy the joints are to reach
- The old material and how stubborn it is
- Any working-time requirements on site
- How many rooms, windows or areas are involved
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- Where the property is
- Access, such as stairs, a lift or height
- A few photos by email, if you can
- What’s wrong with the joints now
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Also near Rogate
Also in Rogate
Rogate buildings and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Uppark (about 4.1 miles south-west) nearby, there’s older building stock in the area around Rogate as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Schools such as Rogate CofE Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Liss station? Then outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near The Parish Church of St Bartholomew, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Rogate is about 4 miles east of Petersfield, in Hampshire. Whether you are in the middle of Rogate or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Rogate is one of 683 places in Hampshire where we work for external mastic. For nearby work, see our Portsmouth page.
Our applicators cover all of GU31 for external mastic. Whether your property is on Red House Court, Habin Hill and Parsonage Estate or anywhere close by, our applicators can take on the job. Close by, we work in Borden (1 mile north-east), Trotton Marsh (2 miles north-east), Hill Brow (2 miles north-west), Chithurst (2 miles east) and Durford Wood (2 miles north-west). Larger places within reach include Havant (12 miles south-west), Horndean (10 miles south-west), Alton (11 miles north-west), Waterlooville (12 miles south-west), Petersfield (4 miles west) and Purbrook (12 miles south-west).
What’s near Rogate
The nearest railway station is Liss station, roughly 3.2 miles north-west of the centre. A little further out are Bear Museum (3.7 miles west) and Petersfield Community Hospital (4 miles west). For a walk, there’s Iping and Stedham Commons and Wheeler's Down.
What the job involves on each surface
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and protects the render itself.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
Landlords, agents and businesses in Rogate
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.