The critical factors you need to know when hanging a heavy picture are:
– what weight the picture is
– what hanging system is best for the job
– what type of wall you are hanging it on.
What is a heavy picture?
In plain simple terms a very heavy picture is one which you wouldn’t think twice about trying to hang without an extra pair of hands. The issue is NOT whether you can lift it. It’s about whether you have the strength and motor control in your upper body to execute a manoeuvre to hook it onto the wall on two sides – while holding it above your head.
If you would struggle to hang a picture on your own because of size or weight then you ought to be thinking seriously about heavy duty hanging systems – and checking the wall!
Types of walls
Interior walls are built using a wooden framework and some form of covering – often plasterboard in modern houses.They’re not really suitable for hanging anything heavy. Light and medium-sized pictures can be hung on dry partition walls using picture hooks which are hammered into the walls using long hardened or steel pins.
However, steel pins are not long enough nor are they strong enough to hold heavyweight pictures and should NOT be used – unless you want your picture to fall off the wall.
Ideally, you should aim to hang medium-sized pictures where the stud frame is (i.e. into the wood which provides a more stable structure) but the chances are the location of the wall stud does not fit where you’d like to hang your picture. To check their location you need to use a stud locator. The stud finder is invaluable for older properties and where you have drywall. If you know the drywall is robust you can use a special anchor for drywall.
If you live in an older house you might find that some of your original interior walls are made of lath and plaster and the rule for these is you absolutely MUST find the wall studs before you hang anything.
Load bearing walls
Domestic homes will always have exterior walls and load-bearing walls which are suitable for hanging items which are a heavyweight. Typically in the UK, the wall is a solid masonry (brick or stone) wall or a concrete block wall.
These are the walls from which to hang a very large or very heavy picture (or mirror i.e. there’s a good reason why very large mirror are very often found on chimney breasts). That’s because this type of wall can take the longer screw length which might be required to get a solid fix.
If you’re hanging artwork in another sort of space you need to check what sort of wall it is. Banging on the wall often provides a good indication. If it sounds hollow then it’s an interior drywall. The other trick is to bang in a nail. If it’s easy to hammer in then chances are it’s a drywall. If it takes a lot more effort it’s probably a masonry wall. If it’s really difficult to impossible then it’s very likely you’ve hit the concrete and only drills and screws (and a heavy duty electric drill) will work.The same can be said for good quality exterior brickwork. One further consideration is the decoration.
If you think you might want to move paintings around a lot I wouldn’t favour walls which are wallpapered!It’s easy to fix holes in a painted plaster wall – but sorting out multiple large holes in the nice wallpaper is a bit of a challenge!
What is heavy duty hanging system?
Heavy duty hanging designed to provide a more secure fixing to large and/or heavy pictures. They’re made of more robust metal and commonly have at least two if not three screw holes.
It requires TWO bits of complementary hardware:
heavy duty hanger -this is a flat steel plate with a hanging loop at one end which is fixed to either side of the back of the picture frame. It’s often plated in brass and has at least two and often three holes to ensure a secure fixing should any screw get loose. They are often between 50mm and 90mm in length. They can have either a D ring at one end or a straphanger with a square hanging loop.
the heavy duty J hook – this is fixed to the wall and is the mate for the heavy duty hanger fixed to the frame. It provides the secure structure over which the D ring or loop is hung.
Why use heavy duty hangers?
Hanging is basically as good as the weakest point within the apparatus and the level of tension placed on any weaknesses. Hence, in general, it’s advisable not to use wire and d rings for very heavy pictures because it’s been known for the wire to create a lot of strain that in turns pulls a one screw D ring out of the back of the frame – and the picture comes crashing down.
Heavy duty hanging hardware prevents pictures falling off the wall (so long as they are fixed to a robust wall and the correct hangers for the weight are used). There’s no chain or wire involved which might unravel or pull out from the back of the frame. You are also not reliant on one screw on either side the tilted picture – because they are fixed either side and not in the middle
How to attach heavy-duty hangers to a heavy picture
bathroom scale – you need to check the weight of the picture and make sure that the fixings are suitable for the weight.(Get the weight in kilos and pounds as hanging systems vary as to which system they use)
2 x heavy duty hangers – to fix to the back of the frame
2 x heavy duty wall hooks – also called a Heavy duty J picture hanging hook
OR one horizontal interlocking bracket system fixed to the top of the frame and the wall (eg Z30 Z Bar Mirror & Picture hanger)
screws for both the hanger and the hook – suitable for the medium they are to be fixed to
the type of screw is dictated by what you are fixing into (eg masonry or wood);
the length of the screw is dictated by
how thick the frame is (i.e. this is one of the reasons why larger/heavier pictures need bigger/thicker frames)
how robust the wall is (eg in old brick we use longer masonry screws) and
the size is dictated by the size of the hole in the heavy-duty hanging hook and hence screw size,
the length is dictated by the nature of the wall and length of screw used.
the correct drill bit for the type of wall (eg you need a masonry drill bit for masonry walls)
a spirit level – ideally one which is long!
a measuring tape
sticky painters tape (the sort which lifts off easily)
a soft pencil
Heavier pictures hung on two wall fixings
Aim: The D ring /loop goes straight over TWO static and robust hooks on the wall – no picture wire or chain involved. Fix hanging straps to either side of the frame. Fix hanging hooks to the wall. Hang the strap over the frame.
The process is as follows (omitting the checks as to which sort of drill bit/ rawl plug, screw you need to use)
Weigh the picture
Locate the studs in an interior wall if not using a sold wall. Check whether the width between the studs is compatible with the width between the vertical uprights of your frame. If not review whether you want to relocate the place to hang.
Select a heavy duty picture hanger which is the right gauge for the weight of the picture
Measure the depth of the frame and select the correct depth of screws (you don’t want the screws coming through the other side!)
Mark off the same distance from the top of the frame. Make sure that you’ve taken account of the size of the hook it will be hanging over which is going to fixed to the wall. (You need to avoid this being on show) Try placing the hook on the back of the frame, then place the hanging loop over it and determine where the plate needs to go on the back of the frame so that the hook is invisible.
Drill a hole and screw the hanger in near the top on either side. Make sure that the the plate is vertical and that the D ring or loop is positioned at the top of the plate (ready to loop over the hook).
Use the tape and spirit level to get the level right (i.e. bubble in the middle). Mark up the wall where the hook needs to go and then drill (and rawlplug) the hole and screw the hook to the wall.
Hang the loop or D rings over the hook on the wall.