The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Cadnam facade sealing

Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Cadnam. Send photographs or drawings for a fixed quote.

  • Failed sealant on precast panel joints
  • Sealant pulling away from frames or panels
  • Cold air coming in at window perimeters
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS accredited
£5m public liability

Facade sealing across Cadnam

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Facade sealing in Cadnam, done properly

Installing framed glazing systems isn’t part of our work. What we seal are the joints around them: perimeter joints where frames meet the structure, panel joints and window perimeters with products suited to facade or glazing perimeter joints. We work on stone and brick facade joints, shopfront frames and cladding panel joints, and the failures we are asked to look at most are gaps between rainscreen or cladding panels and cold air coming in at window perimeters. A specialist sealant contractor works differently from a general builder: in Cadnam, that means joint design, primers and backing rod as standard.

Construction in and around smaller places such as Cadnam is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

A 12-month guarantee applies to all our work. If an installation problem shows up, phone 01277 525 020 or email a schedule or drawings and we will arrange a return visit.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Cadnam (SO40)
Wider area
Hampshire
Cover
12 months on every job
Price
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026

Questions about Cadnam

Do you cover business parks and estates near Cadnam, such as Mortimer Trading Estate?

Yes. Estates, retail parks and business parks around Cadnam, Mortimer Trading Estate among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.

Do you take on work at healthcare sites like Tatchbury Mount Hospital?

Yes, healthcare and care buildings are part of our work. Work is phased so departments keep running, under the site’s own rules.

Can you find out why a window is leaking?

Yes. Photos are often enough to start, followed by a visit if needed. Many frame leaks are sealant failures, though not all, and we’ll tell you which.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

Is Cadnam in your area?

Yes. We cover Cadnam and the rest of Hampshire. For a quote, phone 01277 525 020 or email drawings and photos.

When is resealing likely to be due?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

How long does a typical visit take?

We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.

New build and refits around Cadnam

A 2-mile radius around Cadnam takes in a number of hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Cadnam is in the South East, one of the UK’s drier regions. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, which is why external dates are agreed with the site manager.

Hotel extensions and refits, at places such as The Bartley Lodge Hotel (less than half a mile south of Cadnam), normally run between busy periods, so the sealing is squeezed into short windows. Older buildings in the area around Cadnam, such as Landford Manor, 4.6 miles to the north-west of Cadnam, need care when sealed: the product has to suit soft or historic materials.

Cadnam is about 3 miles west of Totton, in Hampshire. Businesses, contractors and managing agents in Cadnam use us for work on facade joints, as part of our coverage of Hampshire. Across Hampshire, 723 places are covered, including Cadnam. Southampton is covered too, around 8 miles from Cadnam.

Business premises anywhere in SO40 are within our area. Streets here include Old Lyndhurst Road, White Hart Lane and Southampton Road. Sites close to Cadnam are covered too, including Wittensford (1 mile west), Bartley (1 mile south-east), Copythorne (1 mile north-east), Newbridge (1 mile north) and Winsor (1 mile east). A short drive away, we cover Winchester (15 miles north-east), Eastleigh (11 miles east), Totton (3 miles east), Chandler's Ford (9 miles north-east), Hedge End (12 miles east) and Lymington (11 miles south).

Local landmarks in Cadnam

In Cadnam, that means premises near The White Hart pub and the streets around them. For rail, the closest station is Ashurst New Forest station, about 3.1 miles south-east of the centre. Well-known places in the area include Tatchbury Mount Hospital (2.2 miles east) and National Dairy Museum (3.6 miles south-east). The countryside around Cadnam includes Copythorne Common.

Map of Cadnam © OpenStreetMap contributors

After the work

Regular inspection catches problems early. In particular:

  • Confirm the survey covers external sealants in older buildings
  • Check that rainwater leaves the facade the way it was designed to
  • Walk the elevations once or twice a year
  • Record the product and colour used on each elevation

Blocked sills and gutters push water at the joints. Good drainage keeps water moving off the facade rather than sitting against the joints.

Use each reseal to correct the joint: correct depth, proper backing and a sealant that can take the movement. Repeating a faulty detail just repeats the failure.

Signs you need facade sealing in Cadnam

Adhesive failure, where the sealant peels away from one face, normally comes from poor preparation. Dust, old sealant residue, damp or a missing primer stop it bonding properly.

Site and facilities staff are often the first to spot these:

  • Gaps between rainscreen or cladding panels
  • Sealant pulling away from frames or panels
  • Hard, chalky sealant that no longer flexes
  • Patch repairs that keep failing

New units and refits on sites such as Mortimer Trading Estate, 2.4 miles to the north-east of Cadnam, need their panel and perimeter joints sealed to the specification.

Comparing quotes

  • Their public liability cover
  • Their pre-qualification and accreditations
  • Do they follow the manufacturer’s priming guidance?
  • What the guarantee covers, and for how long

How to choose a sealant contractor

Our process

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work usually takes longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather, and we clear our waste as we work. If others near Cadnam need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  1. Access, site rules and timing are settled with the client up front.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. Each joint is cut out and the edges inspected.
  4. Faces are cleaned, primed where needed and backed.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. We hand over with our 12-month workmanship guarantee.

Preparing the site

  • Tell staff and tenants when we’ll be in
  • Confirm the product named in the specification
  • Send asbestos survey details if the building is pre-2000

Request a quote

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. The easiest way is to ring 01277 525 020 or email us.

Get a price

Related advice

Doing it in-house

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.

Surface by surface

Window and door perimeters

Window and door perimeters make up most facade sealing work. A low-modulus neutral-cure product, chosen for the frame and wall, goes in.

Render and coated surfaces

Sealant can only hold as well as the render or paint beneath it. Loose coatings are cleaned back first, and areas needing repair are flagged.

Honest limits

Being straight saves everyone time. New sealant won’t cure:

  • Arranging specialist high-level access, which is planned with the client
  • Joints whose design needs changing by the specifier
  • Installing or repairing glazing systems

Not sure which it is? You can phone 01277 525 020 or send details through our quote form and we will tell you honestly.

Joints and surfaces we work on

  • Stone and brick facade joints
  • Perimeter joints where frames meet the structure
  • Cladding panel joints
  • Shopfront frames
  • Coping and flashing joints
  • Window and door perimeters
Accreditations

Trusted. Accredited. Insured.