Best UV-Protective Glass for Framing Antique Maps and Artwork

If you have searched for the best UV glass to frame an antique map or a valuable print, you want a recommendation, not a chemistry lesson. The short version: three products cover almost every case. The right one depends on size, value, and where the piece will hang. Everything else in this guide is the reasoning behind those three.

We frame antique maps, watercolours, and original artwork every week at our workshop in Bollington. Most of the conservation work coming through involves a UV-filtering glazing decision, and we have used Tru Vue glass and acrylic for years alongside Artglass UV70 as a strong mid-tier option. The recommendations below are what we would actually choose, not a balanced summary.

The Short Answer

For most antique maps, prints, and original artwork up to A1, the answer is Tru Vue Museum Glass. It blocks 99% of UV, has a multi-layer anti-reflective coating that virtually eliminates glare, and lets the artwork read as if there is no glass in front of it at all.

For oversized work, anything that needs to travel, or anywhere shatter risk matters, the right choice is Tru Vue Optium Museum Acrylic. Same UV protection and anti-reflective clarity as Museum Glass, in a shatter-resistant material that weighs a fraction as much.

For a strong mid-tier alternative when the Museum Glass price tier does not make sense, Artglass UV70 is the right call. UV blocking in the high-90s with an anti-reflective option, at a clearly lower price point.

If none of those fit, Tru Vue Conservation Clear is a UV-filtering glass without the anti-reflective coating. An honest "good but not premium" option. Standard 2mm float glass, the kind that comes in most off-the-shelf frames, blocks only about 45% of UV and is not adequate for anything you want to keep.

How UV Damages Antique Maps and Artwork

UV radiation breaks chemical bonds in pigments, dyes, and the organic compounds that make up paper. The damage is cumulative. Every hour of exposure adds to the total, and none of it is reversible. A piece in moderate light for twenty years receives the same dose as one in strong light for five.

Antique maps suffer in three specific ways. Pigments fade, with reds and blues going first, so old hand-coloured maps often shift towards a brown-yellow palette as the original tones break down. The paper itself yellows and becomes brittle, because the lignin compounds in older paper degrade under UV. Annotations, signatures, and ink can fade, particularly iron gall ink, which is sensitive to both light and humidity.

Watercolours and works on paper are the most light-sensitive media we frame. Photographic prints, especially older silver-gelatin and dye-based prints, lose density and shift colour balance. Textiles fade faster than print inks, which is worth knowing if you are framing a sampler or a flag alongside a map.

Heat and moisture do their own damage alongside UV, particularly in domestic environments. Our guide on condensation inside picture frames covers the moisture side of the same problem.

Choosing Between Museum Glass, Optium, and UV70

Tru Vue Museum Glass

Museum Glass is the standard recommendation for valuable artwork hanging in normal domestic or gallery conditions. It blocks 99% of UV, has a multi-layer anti-reflective coating that virtually eliminates glare, and reads as exceptionally clear glass.

Use it for antique maps and prints up to A1, original watercolours, signed limited editions, family heirlooms, and anything you would keep behind glass for decades. We use it as our default for conservation work in this size range.

Pricing tier: premium. Worth it on anything with real value. Send us the dimensions of your piece and we can quote on the framing.

Tru Vue Optium Museum Acrylic

Optium delivers the same UV and anti-reflective performance as Museum Glass in shatter-resistant acrylic. It is lighter, which is a real factor for oversized work, safer if it falls or is knocked, and antistatic, which means it does not attract dust the way standard acrylic does.

Use it for oversized framing where glass weight becomes a structural and handling problem, anything that needs to be shipped or transported, public spaces where shatter risk matters, and family homes with young children. Galleries often specify it for travelling exhibitions.

Pricing tier: premium, comparable to Museum Glass. Sometimes it works out marginally cheaper because acrylic does not need the same handling and packaging.

Artglass UV70

Artglass UV70 is a strong alternative when the Museum Glass price tier does not make sense. UV blocking is in the high-90s, more than enough for almost any practical purpose, and Artglass also offers an anti-reflective option called UV70 AR.

Use it for prints and photographs you value but that are not museum-grade originals, sets of work where you want consistent protection without the Museum Glass per-frame cost, or any case where the price difference funds something else like a better mount or a wider frame profile.

Pricing tier: mid. Still a real step up from standard glass, at a much smaller cost increment than Museum Glass.

When Standard Glass Is Enough

Not everything needs museum-grade glazing. Standard 2mm float glass blocks about 45% of UV. Not great, but adequate for some cases.

Replaceable prints, posters, and reproductions in sheltered positions do not justify premium glazing. If a poster fades after ten years, you replace it. The same applies to decorative pieces with no underlying value. Hallways, bedrooms with small windows, and rooms that get little direct sunlight provide a measure of natural protection regardless of glazing.

If you are framing a set of pieces and the budget is fixed, a sensible approach is to use Museum Glass on the most valuable item and standard or UV70 on the rest. We suggest this regularly.

For Antique Maps Specifically

Antique maps are one of the most commonly framed conservation pieces, and they need more than glazing alone. The full conservation approach combines five things:

• UV-filtering glazing (Museum Glass or Artglass UV70).

• Acid-free, lignin-free mount and backing board, conservation grade, usually 100% rag or alpha-cellulose.

• Reversible hinging using Japanese tissue and wheat-starch paste rather than pressure-sensitive tape. Our lacing and hinging guide covers the mounting principles for works on paper and textile.

• A sealed back to keep dust, insects, and humidity gradients out of the frame package.

• Spacing so the artwork never touches the glass surface.

Glazing is the most visible part of the decision, but it is only one of five factors. If you are framing a map of meaningful financial or historical value, the full conservation package matters. We cover the broader approach in our conservation framing service.

What We Recommend for Different Cases

A few worked examples to make this concrete.

A 17th-century hand-coloured map worth around £800: Museum Glass, conservation mount and backing, reversible hinges. The framing is a fraction of the map value, and the glazing alone could prevent thousands of pounds of fade damage over decades.

A reproduction print of an antique map for a hallway: standard glass or UV70, depending on how much sunlight the wall gets. The print is replaceable, and the glazing decision is mostly about how long you want it to look fresh.

An original watercolour for a south-facing living room: Museum Glass without question. Watercolours fade faster than almost anything else we frame, and a south-facing room with daylight delivers the worst possible UV exposure.

A 1.5 metre wide poster frame for an office reception: Optium Museum Acrylic. The size makes glass impractical to handle and risky to transport, and acrylic gives the same protection in a sensible material.

A signed photograph of sentimental rather than financial value: Museum Glass if you can stretch to it, UV70 otherwise. The signature is the part that fades fastest.

Frequently Asked Questions

Is UV glass worth it?

For anything you want to keep, yes. The cost difference between standard glass and Museum Glass on a typical frame is usually less than the value of what is behind it. The cost difference on something irreplaceable is irrelevant.

How long does UV glazing last?

The UV-filtering properties of Museum Glass, Optium, and Artglass UV70 do not degrade over time. The coatings are bonded into or onto the material rather than applied as a surface layer that wears off. You will not need to replace glazing for UV reasons.

Can you tell what glazing my existing frame has?

Often, yes. Bring the piece to our workshop in Bollington or send a photograph and dimensions. We can usually identify standard, UV-filtering, and museum glazing on inspection, and recommend an upgrade if it is worth doing.

We stock and specify Tru Vue Museum Glass, Tru Vue Optium Museum Acrylic, Artglass UV70, and Tru Vue Conservation Clear at Harten. If you are framing an antique map, an original artwork, or anything you want to last, send us the dimensions and we will quote on the right glazing for the piece. Our 5-year guarantee on the framing assumes you have made a good glazing choice, and we would rather help you make one upfront than reframe it later.

For pieces that need full conservation framing (hinging, board, and sealing as well as glazing), see our complete approach. For the heritage angle on long-term protection, our guide to protecting heirlooms with conservation framing covers the personal side of the same decision.