the stairs and staircase company

7/29/2019 The Stairs and Staircase Company

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The Stairs and Staircase Company

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Dealing With Squeaking Stairs.

The main causes of squeaking stairs are the shrinkage of the timber treads over time, and general wear and tear.

The tread(s) can start to rub against the top of the riser causing a squeaking or creaking noise. Any adhesiveoriginally used to bind the treads and risers together may also have become unstuck. This is normally just anannoyance, rather than anything seriously wrong with your staircase.

There can be several methods of addressing or even eradicating these squeaky steps. In most cases the bestresults are obtained by repairs from the underside of the staircase. This is not always feasible as sometimes thestaircase is blocked off from the rear. It is however also possible to repair from the front of the staircase.

Lets assume for the moment that the rear of the staircase is not accessible and that we need to tackle theproblem from the front of the staircase. There are three main methods of tackling loose treads from the front.

1. Screwing Loose Treads.

The best method of securing the treads to the risers is to screw them down. Normally, three screws pertread are more than sufficient. Before mounting the screws, you will need to pre drill holes through the tread

level with the riser. It is recommended to use 38mm (1 7/16") No.8 countersunk screws.
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Once the screws are in place, make sure they are countersunk below the surface of the tread. If thestaircase is exposed (i.e. no carpeting) it is wise to use an appropriately coloured wood filler to conceal the

screws. For a more professional approach, you could use a Plug Cutter and Screwsink set to properlydisguise a countersunk screw.

This process is detailed below:

Using a block of wood which is ofidentical type to the tread, use a plug

cutter to route out a woodplug with thesame diameter as the screwsink.


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The woodplug is formed in the block

and now needs to be cut out.

Use a thin chisel to "chip" out theformed woodplug as shown.

Now, using a screwsink, drill out thepilot hole for the countersunk screw,through the tread into the top of the

riser.


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Screw the countersunk screw into thetop of the tread and through into the

riser.

With the tread secured, cover the holeleft by the screw with the woodblockyou produced earlier. Cover the baseand sides of the block with wood glue.Make sure you align the woodgrain of

the plug with the rest of the grain of thetread.


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Leave the glue to dry for a few hours.Once this is complete, use a sharp

chisel to slice off the bulk of protrudingwoodplug.

Finally, sand the rough top of thewoodplug so it is perfectly flush with

the top of the tread.

For MDF treads and risers, a slightly different approach is needed. No pre-drilled holes are needed forMDF, as it is recommended to use special MDF screws. These have the added benefit of not splitting the

MDF board, as can occur when drilling pilot holes or using unsuitable screws. Using normal screwsdesigned for Hard or Softwood can cause the MDF to bulge and eventually split. The secret

of the MDF screw lies in its structure; a serrated thread means it cuts cleanly through the board withoutbulging or splitting the wood:


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2. Nailing Loose Treads.

One of the simplest repairs is to nail two nails (or more if needed) into the centre of the edge of the tread,where they meet the riser as shown below. Please Note the "dovetail" arrangement in which the nails are

inserted, this gives the nails better grip on the wood. Take care not to split the wood or pierce the edge ofthe riser with the nails.

3. Using A "Moulding" Or "Quadrant".

If a loose riser or tread is found, it is also possible to glue on a "moulding" or quadrant". This long piece ofwood can be glued either at the top of the rise or the bottom or indeed both. It is recommended also that

the moulding be pinned to both the riser and the tread. This method is used as a more aestheticallypleasing alternative to simply nailing or screwing the treads and risers together, but it does require a bitmore precision work. If the staircase is exposed (no carpets) it is recommended for aesthetic reasons to

add these mouldings to all of the stairs.


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Solving The Squeak From Underneath The Stairs.

If, on the other hand the rear of the staircase is accessible, more effective repairs can be made to the stairs.

These are as follows:

1. Glue Blocks.

A successful method of strengthening the joints between riser and tread is to use "glue blocks". These aretriangular shaped small wood blocks, which can be made easily by sawing a square block in half down the

diagonal. Four small pilot holes are drilled into the block at right angles to each other, as shown below:

The glue blocks need to be placed near each corner (and one in the middle on wider staircases) where thetread meets the top of the riser:


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Install the glue blocks with the help of these three simple steps:

Firstly apply some PVA glue to the glueblocks. It is important to move theglued block back and forth to rid of any

air pockets within the glue.


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Place the glue block into position asshown and screw in the securing

screws. Remember to use MDF screwsif you have MDF treads and risers.

Taking care not to push the screwthrough the tread or riser, carefullyscrew in the securing screws. If youhave someone to help, get them to

stand on the tread whilst you drive thescrews home.

An alternative to glue blocks, or indeed in addition if there is enough room, you could add small rectangularblocks to the corners of the stairs to secure the treads to the strings, as shown below:


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Referring to these rectangular blocks as "string blocks", the principle is essentially the same as glue blocks,but in this case are fixing the edges of the treads to the strings. The screws are at right angles to eachother, one boring into the bottom of the tread and the other into the string. Again, it is recommended thatthe blocks can be coated in glue and moved around back and forth on the surface of the wood to eliminateany air pockets in the glue.

2. Replacing Worn Or Missing Wedges.

If the staircase is built into a housed string system, it most likely contains securing wedges for the risers andtreads. These wedges would have been placed in the staircase when it was originally constructed.

They are used to butt the risers and treads up against the mortises of the housed string so that no gaps arevisible between the strings and the treads and risers.

The drawing below summaries this:

Over time and extensive use of the staircase, the wedges can slip or become damaged. This can also leadto the dreaded "creaking" or "squeaking".

A slipped or damaged wedge can normally be spotted if there is a gap showing on the staircase betweenthe tread and/or riser and the string mortise:


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Inspect the rear of the staircase. If any loose wedges are found, gently chip out the old wedge with a chisel.

Should the wedge be too damaged to refit into the mortise,new wedges can be purchased from ouronline shop.

Coat the new replacement wedges with glue and use a mallet to gently drive the new wedges into place. Inaddition, before fitting the new wedges, inject some adhesive into the mortise. That way, when the wedge is

inserted again, the tread or riser will bond with the glue in the mortise and provide extra grip.

3. Insert Small "Slip" Wedges.

Another method of effectively tightening the joints between the tread and riser is to insert small "slip"wedges into the joints.

The procedure of inserting these wedges into the joints varies based upon what types of joints the treadand risers are connected with.

Each wedge should be about 30mm long and tapered down from 3mm to a point. By applying some glue tothe wedges, they should be inserted based upon the following joints:
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Once the glue has dried, a sharp chisel can be used to trim off the ends of the protruding wedges.

Conclusion:To completley resolve any squeaking a combination of glue blocks, string blocks, new wedges and screws

will eliminate the squeak.

Pear stairs sell a number of products to finish your staircase. Remember if you have questions don't hesitate tophone us about your staircase finish. We are a friendly company, phone Pear Stairs on 01938 553311.

Stairs & Staircases Distributed Throughout the UK Tel: (01938) 553311 Fax: (01938) 555885Site Map
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