Window & Door maintenance & care guide

At Mike Martin Windows we are extremely proud of every installation we undertake and are confident your new windows and doors will look fantastic on your Cornwall home for years to come. This is why we have put together this short maintenance guide to show you how to look after your windows and doors.

Your new windows & doors require a minimal amount of care in order to give you trouble-free operation and remain in optimum condition for many years to come.


Condensation fact sheet

The document provides practical advice on managing condensation within the home, focusing on reducing indoor humidity. It suggests immediate actions like wiping down condensation on windows and offers room-specific tips, including using pan lids while cooking and improving ventilation in laundry areas. It also highlights the importance of proper home heating and insulation to minimise condensation. The guidance aims to enhance air quality and prevent mould build-up by adopting simple, everyday practices.

uPVC Care

Tips for uPVC care include

  • Use warm soapy water to wipe them down.
  • Avoid using abrasive products like metal polish, solvents and scouring pads, as they may damage woodgrain and gloss effect finishes.
  • To remove tenacious marks, use a specialist uPVC cleaner.
  • Avoid condensation build-up by clearing leaves and debris from drainage slots and inside the opening sashes.

Composite Door Care

Composite doors are extremely low maintenance. Care for each part of your door in the following way:

  • Door leaf: remove grit and grime using warm water and dry with a cloth.
  • Door frame: use warm soapy water to wash and apply specialist uPVC cleaner to remove tenacious stains.
  • External glass: use warm soapy water to wash and dry with a cloth. Apply a glass cleaner afterwards.
  • Leaded glass: wash using warm soapy water, dry with a soft cloth and finish with glass cleaner.
  • Cylinder locks: a Teflon-based lubricant is recommended. Avoid graphite powder and oil.


Tips for hardware care include:

  • Lubricate metal-to-metal joints (gearing and locking mechanisms, friction stays, hinges, shootbolts and espagnolette) that don’t have nylon bearings once per year using light engineering oil; a 3-in-1 works well.
  • Cleaning: be sure to clean your window furniture every four months to remove dirt and dust. Use a soft duster or damp chamois leather. Avoid abrasive products like scouring pads, metal polish and acetone. Use high-quality polishings and coatings to avoid having to clean very regularly.
  • Cleaning tips: take off hand or arm-based jewelry and watches beforehand as you could accidentally scratch the glass. Never lean ladders against window frames and never walk on a bay roof; you could seriously injure yourself. Use tower scaffolding if access is required. Make sure you’re using the right cleaning method for the correct area of the window.


Tips for glass care include:

  • Use a non-smear glass cleaner and paper towel to ensure your glass remains shiny.
  • Apply the cleaner directly onto the glass, making sure to cover the corners, and wipe down thoroughly using a paper towel until the cleaner is almost gone.
  • External glass: clean every 4 months and ensure it stays free of grime and debris. Use soapy water and wipe with a cloth or paper towel
  • Internal glass: clean with soapy water, finish using a glass cleaner and wipe down with a paper towel or cloth.


Your Endurance Door is the strongest and most secure door on the market, but only when it is locked. When your door is closed it is important to always fully engage the locking mechanism by either lifting the handle or turning the key.

What our customers say

Very satisfied

ne replacement UPVC window. Very satisfied with quick service and customer care.


Warner, K

Complete satisfactory

Replacement of bathroom window completed satisfactorily by experienced team.


Green, S

Very helpful and pleasant to deal with

Window arrived much quicker than anticipated. Everyone we have had contact with, salesman, surveyor, fitters and the office staff have all been very helpful and pleasant to deal with.


Mackie, P

good workmanship and very professional

Everything went well, good workmanship and very professional.


De-Boer, H

Professional and polite

We were very happy throughout the process, all the team were professional and polite. We were informed what was happening at every stage by each department. We would recommend Mike Martin.


Digby, C

Highly recommended

We used Mike Martin Windows to install two replacement double glazed windows at our house. The installation was undertaken to the agreed schedule and budget. They acted very professionally, and the work was completed to a high standard. They kept us well informed throughout the process, before and after the installation. Highly recommended.


Collins, R

Very friendly company

Very friendly company, really good installation, any issues are resolved quickly. Would highly recommend.


Coveney, A

Very nice helpful fitters

Fit new windows and French doors done on day booked although took 1day longer due to very bad rainfall weather very nice helpful fitters.


McPhail, L

Great value

Great value and a good team throughout



Happy with the installation

We were happy with the installation, it was done to schedule and budget, they cleaned up after themselves. After they had gone, we noticed a couple of marks within the glass, we took photos sent them in & within a couple of weeks the panes were replaced without question. Overall, from start to finish the service was excellent. Our thanks to all members of staff involved.



Friendly and professional

Very smooth process from start to finish. All employees friendly and professional. Excellent customer service calls throughout to arrange installation dates etc. Wouldn�t hesitate to recommend MM windows.


Rickard, J

Rectified issue quickly and efficiently

4 new windows and 2 sets of patio doors. One set was stiff to open and the installer rectified issue quickly and efficiently. Would highly recommend this company.


Roberts, T

Very helpful, friendly & polite

Windows & doors fitted, this was completed to agreed original schedule & budget. All staff very helpful, friendly & polite. Happy with level of communication which included aftercare. The few issues regarding the finished product were dealt with in a prompt & satisfactory manner.



Friendly, courteous, and professional

Really good fitters, friendly, courteous, and professional. They fitted 2 new doors. A small problem was resolved without issue. I’d use them again and recommend to others.



First rate

Local company whose communication, fitters and aftercare was first rate. I would recommend to anyone; they exceeded our expectations.


Moody, S

Great advice

Great advice when choosing my windows, Mel was really personable and down to earth. No sales were pushed at all, really nice installers, friendly and tidy. There was a brake on the old window frame which was fixed beautifully.


Assemakis, D


Fitted new front and rear doors.


Gilbert, A


Everything was installed well, good communication and minor issues resolved to my satisfaction.


Bulford, T

Very pleased with the result

MMW fitted a replacement roof lantern for us. They were really professional from providing the initial quote to completion. Could not fault them. They discussed our original suggestion with us and came up with a far more suitable one. Very pleased with the result.
April, 24

Wycherley, F

Very efficient and courteous

I would recommend this company, they were efficient and courteous at all times and did an excellent job.

April, 24

Bowman, S

Good Standard

All done to a good standard with friendly team.
April, 24

Terry, P

Very professional

All workmen were courteous, we ran into a problem, but it was quickly dealt with and overcome. Very professional Company.

April, 24

Smith, T

New door fitted

New front door fitted. All done to the agreed schedule and budget. Courteous staff. I would use them again.

April, 24

Tew, J

Excellent A*****

Luke was so helpful and accommodating when choosing two doors for our old cottage. He was patient and nothing was too much trouble. They were very efficient in getting the doors measured and made up. The 2 guys that came to fit our doors were so nice, and I was amazed how clean and tidy they were. Communication was brilliant, we were kept updated all the way through the process. Excellent A*****

Trivett, S

Very professional and friendly

Installed 6 windows within agreed budget and schedule. All staff very professional and friendly. No issues.

April, 24

Kirkham, S & K

Very pleased with workmanship

Fitted a new back door in good time and I am very pleased with the workmanship.

April, 24

Crowley, E

Good clean job

They arrived on time and did a good clean job.

April, 24


Very highly recommended

Excellent materials and workmanship. Very highly recommended
April, 24

Skinner, H

Highly recommend this company

Installing double-glazing. Done on time and with care and attention to detail.
March, 24

Ling, T

Local highly recommended business.

Local highly recommended business. Friendly staff, good communication, doors fitted by experienced professional staff. Care taken of property whilst fitting.
March, 24

Bindon, S

Very happy great products

Very happy great products
March, 24

Powell, T

First class team

First class team
March, 24

Twyman, George


Send message