Frosted window film, also known as privacy film or frosted glass film, lets natural light through while blocking the view from outside. No net curtains, no blinds you have to keep down all day, no replacing perfectly good glass. Professionally installed across Cambridge homes and offices. Same-day in most cases.
Frosted window film is the most popular window film installed across Cambridge and for good reason. It solves the most common glazing problem in homes and offices. You want privacy. You also want natural light. Net curtains and blinds give you one at the expense of the other.
Frosted film gives you both. It diffuses light rather than blocking it. From outside the glass appears opaque. From inside the room stays bright. The quality of natural light coming through is barely changed. The privacy from the street or a neighbouring window is complete.
The film used by Velfi Interiors is professional-grade, not the self-adhesive film you can buy in a hardware shop. It bonds properly to clean glass, applies without bubbles and is finished to the edge properly so it does not lift. That is the difference between a result that lasts 10 years and one that starts peeling in 12 months.
Most Cambridge window film installations take under an hour per window. The room is back in use immediately. There is no drying time, no fumes and no mess to clean up. And the bathroom, office, or front door that had no privacy now has it permanently. For a full comparison of finishes and where each performs best, see the window film guide for commercial and domestic buildings.
Film types available
Frosted privacy film - bathrooms, doors, partitions
Solar control film - heat gain and glare reduction
Reeded and textured film - decorative glass effects
Can you see through it at night? Does it block heat?
These are the questions people ask before they book, so here are honest answers.
Can you see through frosted window film?
From outside in daylight, frosted film hides everything but the faintest shapes. That is the point. At night it changes. With the lights on inside and darkness outside, someone close to the glass can pick out movement and silhouettes, though not detail. Frosted film gives you strong privacy day and night, but it is not a blackout. If you need total privacy after dark, such as a ground-floor bedroom, a blind on top is still the right answer.
Does frosted window film work at night?
Yes, for detail. Faces, rooms and what you are doing are hidden. Be wary of anyone selling one-way mirror film as a privacy fix. Mirror film only works while it is brighter outside than in, so it fails the moment you turn a light on. Frosted film does not rely on lighting conditions.
Does frosted film block heat, light or UV?
Frosted film is a privacy product. It diffuses light rather than stopping it, so rooms stay bright, and it does very little about heat. If heat or glare is the problem, you want solar control film. UV blocking varies from film to film. Ask for the data sheet of the exact film you are being quoted for, and you will get it in writing.
Does it go on the inside or the outside of the glass?
Almost always the inside face. It is protected from weather and from window cleaners, and it lasts far longer. Exterior-rated films exist for the odd situation where the inside cannot be reached, and that is confirmed before any work starts.
Where it goes
Bathrooms, front doors, offices and more.
Frosted film is the most requested film we fit, and it earns its place in all of these:
Bathroom windows
Privacy for the room with the most steam. Professional film handles condensation and splashes. Our bathroom wrapping work often pairs with it.
Front door panels and side lights
Stops people looking straight down the hallway, keeps the light the glazing was there to give you.
Ground-floor living rooms
Street-facing windows without net curtains. If you want clear glass above eye level, gradient film is worth a look.
Office meeting rooms
Private enough for a confidential call, light enough that nobody sits in a fishbowl. See office refurbishment.
Reception and partitions
A clean, even finish across long runs of glass. Easy to add a band or pattern for a branded look.
Internal glazed doors
Kitchen, hall and cat-flap panels. Privacy where you want it and light carried through the house.
Film or spray?
Frosted film, frosting spray or blinds?
Spray looks cheap quickly and is a pain to remove. Blinds and net curtains block the light you wanted and stay down all day. Here is how the three compare:
Professional frosted film
Frosting spray
Blinds or nets
Finish
Even, factory-made frost
Can be patchy or streaky
Fabric, not glass
Light
Diffused, room stays bright
Diffused
Blocked when closed
Removable
Yes, peels off cleanly
Hard work, often scraping
Yes
Privacy at night
Strong, not a blackout
Strong, not a blackout
Complete once closed
Lifespan
10 years or more, written warranty
Depends on the can and the glass
Depends on use
Hardware-shop film sits in between. It works on a small window if you are patient and accept a few bubbles. On large panes, door panels and anything you want to look finished, professional installation is the difference between a result that lasts and one that starts lifting within a year. The edges are where it shows.
Patterns, designs and bespoke frosting
People searching for frosted film with a pattern or design usually want privacy that does not look like a bathroom. Etched effects, geometric patterns and fades are all possible. Browse patterned window film or reeded film for the decorative end of the range.
Common questions
What people ask before they get in touch.
Film prices vary so much that we do not give a figure before we understand the job. We suit the film type to your goals, specify the right product and fit it to your budget, then you get a fixed quote within 24 hours of seeing photos.
Yes. Frosted film diffuses light rather than blocking it. The room stays light and bright. The amount of light that comes through depends on the density of the film chosen, which is confirmed before installation.
With professional installation, window film lasts 10 years or more. The warranty is confirmed in writing before sign-off. The films used carry manufacturer warranties of 7 to 12 years.
Yes. Window film is fully removable without damaging the glass. No adhesive residue is left behind when removed correctly. Useful for rental properties and commercial spaces where requirements might change.
Not in detail. With lights on inside and darkness outside, someone close to the glass may see silhouettes and movement, but not faces or what you are doing. It is strong privacy day and night, though it is not a blackout, so use a blind as well on a ground-floor bedroom.
Frosted film is made for privacy and does very little about heat. UV blocking depends on the specific film, so ask for the data sheet of the film you are quoted. If heat and glare are the problem, solar control film is the right product.
Almost always the inside face, which protects it from weather and cleaning and helps it last. Exterior-rated films exist for the rare case where the inside is not reachable, and that is confirmed before installation.
Film gives an even, factory finish, lets light through and can be removed cleanly. Spray tends to look patchy and is hard to remove. Blinds and nets block the light you wanted. Professional film is the longest-lasting of the three.
In almost every case, yes. Plain frosted film absorbs very little heat, so it is low risk on double glazing. Darker or heat-absorbing films are different, and the glass is checked before anything is recommended.
Yes. Professional film copes with steam and condensation, and it is finished properly at the edges so it does not lift. A bathroom window is one of the most common jobs we do.
Areas covered
Covering Cambridge and Cambridgeshire.
Based in Wilburton. No travel surcharge for most Cambridgeshire locations. Residential and commercial.
