Hampshire · England

External & façade joints in Heathfield, Hampshire

We cover Heathfield for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.

  • Sealant that has lost its bond to the brick or render
  • Hard, crazed mastic that has stopped moving
  • Movement joints filled with mortar instead of sealant

Book external mastic in Heathfield

What we cannot put right

We will not take on work that will not last, so here’s what sealant cannot put right:

  • Loose or hollow render, which needs re-rendering
  • Structural movement, which needs a surveyor or engineer
  • Cracks in the bricks or render themselves, away from the joints

If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before you book.

Surfaces we seal

  • Concrete & block
  • Façade panels
  • Joints between brick and frames
  • Copings & trims
  • Render & cladding joints
  • Brickwork movement joints

External mastic in Heathfield

Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the line blends in. We work on brickwork movement joints, concrete & block and copings & trims, and people most often call us about moss and dirt in joints with no sealant left and hard, crazed mastic that has stopped moving.

Outbuildings, garages and conservatories around homes in places like Heathfield add more joints to look after. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.

Every job is covered by a one-year guarantee, wherever you are in Hampshire.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Heathfield (PO15, PO14)
Wider area
Hampshire
Guarantee
A year, on every job
Quote
Quoted before any work starts
Phone
0345 464 0079
Page updated
26 October 2026

Your questions about external mastic in Heathfield

Will you come out to Heathfield?

Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.

Does the coastal weather in Heathfield affect outside sealant?

Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.

Can a movement joint be filled with mortar?

No. Cement or mortar can’t stretch. Where a joint has been mortared, it can often be raked out and sealed properly.

Will you leave a mess?

No. We work neatly, protect the area around the joints and tidy up afterwards.

Do you guarantee your work?

Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.

Do I have to be there?

It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.

I’m a tenant. Can you help?

Of course. Check with your landlord; we can send the quote to them too.

Do you have insurance?

Yes. We are fully insured.

Quotes for external mastic in Heathfield

Call for a quick quote. The main things that affect it are:

  • How many areas need sealing
  • How much old sealant there is and how hard it is to remove
  • Which sealant suits the joint
  • The size of the job

Commercial jobs are quoted on the same basis as homes: 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 will explain what it covers.

What to tell us for a quote

Photos help, but a description is a good start. Please mention:

  • If someone has resealed it before
  • The rough size of the job
  • What’s wrong with the joints now
  • How we’d reach the joints

It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or send us an email.

What happens on the day

All our tools and materials come with us in the van. Once we have agreed what’s being done, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on the building. In a smaller place like Heathfield, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.

  1. First, the joints are inspected and the access agreed.
  2. We cut out the old mastic and rake out anything in the joint.
  3. Joint faces are cleaned back and primed if the sealant needs it.
  4. Backing rod sized to the joint goes in to set the depth.
  5. We apply the sealant, tool it and check the whole run.

Preparing for the visit

  • Try not to wet indoor joints just before the visit
  • Let us know about earlier repairs to the joints
  • Tell us about access, such as stairs, a lift or high-level joints

Ask for a quote

Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work.

Ask for a quote

Read more

Work for landlords, hotels and businesses

From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

We work for landlords and agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.

Heathfield buildings and the weather

Heathfield 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 movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

For site and facilities teams at buildings such as Ranvilles Infant School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near St Columba, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you let a flat or house near Fareham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.

Heathfield is about 1 mile west of Fareham, in Hampshire. We provide external mastic to homes and businesses in Heathfield. Heathfield is one of 683 places in Hampshire where we work. Our Portsmouth page covers work nearby, about 7 miles away.

Here we cover the PO15 and PO14 postcode area for external mastic. We cover properties on Oak Road, Peak Lane and The Avenue and the roads around them. Other places close to Heathfield include Catisfield (1 mile west), Titchfield (1 mile west), Funtley (1 mile north), Titchfield Park (2 miles north-west) and Little Posbrook (2 miles south-west). Larger places within reach include Winchester (15 miles north), Gosport (4 miles south-east), Havant (10 miles east), Eastleigh (10 miles north-west), Horndean (10 miles north-east) and Totton (14 miles west).

Near you in Heathfield

Around Heathfield, our work takes us to homes and buildings near Fishermans Arms and The Henry Cort Community College and the streets around them. The closest station to Heathfield is Fareham station, about 0.9 miles east of the centre. Nearby you will also find Fareham Shopping Centre (1.6 miles east) and Carron Row Farm Museum (1 mile north-west). Green spaces nearby include Portsdown Hill and Swanwick Lakes.

Map of Heathfield © OpenStreetMap contributors

What happens if it’s left?

Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Homes in smaller places like Heathfield can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.

No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.

Why book with us

  • Anti-fungal sanitary silicone in wet areas
  • Old sealant always removed completely
  • We are fully insured
  • Homes, businesses and hotels

Take a look at our cost guide and what customers say.

Different surfaces, different methods

Copings and trims

Copings expand and contract through the day, so the joints need a sealant that stays flexible year round.

Concrete and blockwork

Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.

Keeping the joints in good condition

A little care helps the new joints last. We recommend:

  • Fix overflowing gutters above sealed joints
  • Have failed joints looked at early
  • Avoid pressure-washing directly into sealant joints
  • Clear growth from the base of walls and joints

Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.

Act while the splits are small. At that stage it’s a simple cut out and reseal.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job