Engineered wood to tile transition - is a cork expansion strip a good option?

Yes that is an option. The trick is to cut a nice clean straight edge and keep the gap uniform for aesthetic reasons but by all means this can be done and creates a far cleaner finish.

If the levels are the same between tile and wood flooring, I would fit close to the tile, as there is expansion around the room, and Finnish with a sealant to stop any moisture getting under the flooring.

Generally speaking as long as the main areas have an expansion gap you can fit wood slightly tighter to areas such as tiles if you wish to finish flush without a threshold. Ideally 10mm is your max for expansion. I’d suggest using some wood putty or a matching filler as these expand as the wood will naturally move, OSMO do some very good gap fillers with all different colour matches. These are designed to help fill areas in herringbones and chevrons so will adhere to the timber. Cork is not a bad choice as you can cut to shape and size however with a gap filler it will also seal it tight working as a moister barrier when connecting to a wet area like a bathroom or kitchen.

If you do not use a threshold bar with an integral expansion area you will take the risk that if temperatures, humidity, seasons change and the the natural wood product wants to expand/ contract you could end up bulging in the floor, worse still some cracks and delimitation. Also always best to follow manufacturer’s recommendations to not null and void the warranty.

Well really you answered your own question you need an expansion gap, if you fill it with anything you will not have a gap, the old cork expansion strips were used for the old five finger parquet which was such small pieces of wood the expansion was minimal You need a threshold to cover a 10-15mm gap

Laminate manufacturers recommend a gap of 8-10 mm from the laminate to walls or other obstructions, as laminate expands with temperature changes. If the gaps are not observed, the laminate may stand on end and there will be no warranty from the manufacturer. I would recommend using a threshold where tiles and laminate meet, but if this does not suit the customer, he can use a cork to compensate for the expansion, but in a small area and on one side.

As stated above you need an expansion gap usually 8 to 10mm. In my experience a threshold bar to cover the gap is best. You can only use cork strip if the flooring is fully stuck down to the subfloor as it may lift over time.

I would check with the manufacturers method statement so you dont lose your guarantee. Normally a threshold bar would be recommended.

Approx 10mm. Depending on the overall area. Recommended every 8m stretch. You can buy expansion strips online or most tile suppliers

As most timber flooring has more movement than a standard laminate flooring I would normally allow 8-10mm expansion gap

There should be a technological distance of about 10-15 mm between the wooden floor and the tiles. If you don't want to use transitional wooden strip you could use cork expansion strip.

Caulking would be okay, remeber though it will be a high traffic area so caulk would quickly get dirty, but with the acrylic u mentioned it should be just fine, if u don't want the standard threshold you can just grout the gap if you'd like and the others side should have sufficient expansion gap.

Expansion gaps are very important as you note. What direction are the planks going into the doorway? If horizontal then, you could do a smaller expansion gap but still need a decent gap. Cork fillers might work but they do need frequent replacement. If the planks are vertical into the doorway, you may well be ok leaving a 2mm gap, to then fill with a clear, flexible sealant or colour match (if available) flexible sealant.

If the wood floor is level with your cork tiles you can fit it flush with out a gap, because your cork tiles have movement. So you don’t need a expansion gap

Yes you can use cork or you can get a tile to floor t bar in solid timber to match your new floor which also allows for expansion

You shouldn't have too much expansion if the engineered wood planks are laid in length towards the tiles. Otherwise, I would recommend using a threshold.

Do not leave any gap at all. Just lay tiles right next to the wood floor and it will be fine and look great. Your floor got plenty of roof for expansion in other areas any way. And in case you have any probleblems (which is unlikely) you can always make this gap in future. But from my experience it is always fine.

I know the answer.

Usually 10mm gap would be sufficient depending also which way the direction Od grain in the flooring finished with a cover strip. If not a cover strip then a durable filler or colour match filler.

In an ideal world, and according to manufacturers guidelines, you’d leave an expansion gap all round. In reality, on occasions, for the aesthetics of what you want to achieve, you will leave less of an expansion gap than is ideal. I occasionally leave a ‘shadow gap’ of a couple of mm up against e.g. a fire hearth as the option of putting beading or a flat strip simply doesn’t work/look right! In my opinion you are achieving the same result in your case as if you were running your wood through into the other room rather than tiling, in which case there would be no expansion gap there anyway. The floor will still have room to expand elsewhere and it will only really come in to play if you have a large spillage you don’t clean up, a leak from somewhere or there are huge variations in temperature/moisture (if the rooms are heated I’m guessing this is unlikely).

15mm expansion gaps. Cork filler is fine as long as its covered with a flexible sealant

I have used been given that cork expansion strip before to install. Looks a bit naff and like 3 months later I got a call and all the Cork had pulled out from expansion. So I would say it just doesn't work. I would leave a expansion gap but maybe a 5mm gap rather than 10mm. It would look more like a shadow gap and I don't think you'd pay much notice. It's a tricky one for sure. Floating floors move all the time.

The answer is yes. Depending on what your are transitioning too.

Hi ,leave the gap with minim 3mm,and cover that gap with silicone or trim

Cork doesn’t allow the floor to expand a silicone bead would be better One major company changed the name from cork expansion strip to cork infill because of this