Toilet Flange Too High! Causes + Fixes

One of the most common problems homeowners face when it comes to their bathrooms and toilets is a toilet flange that has been installed too high. This can be a serious problem that should be addressed as soon as possible, in order to prevent leaks and other issues.

If “Toilet Flange Too High” sounds like your problem, then read on for 4 tips on lowering your toilet flange!

What happens if toilet flange is too high?

If the toilet flange is too high then all of the wastewater will be able to drain into and out of your home. If the toilet flange is too high, then that means that it’s too far away from the floor and there may not be enough pipe for water to fully empty if it overflows after filling up. Flush toilets are designed so that when they go over capacity, they should mix with other water in order to decrease pressure inside and allow wastewater to flow out. When a toilet can’t push its content through pipes at a fast enough rate because the pipe line is short, wasted water flows back around and can leak onto floors or other surfaces within your home which would result in damage and mold growth over time.

Toilet Flange Too High – Main Causes?

Toilet Flange Too High can be caused by anything from the wrong size to old age. It’s common for an older toilet or one that uses 1.28 gallons per flush to allow sewer gases to release through the overflow tube by sitting too high in the hole, which increases its height above the floor. Secondly, it could be because of improper installation or drainage problems–so check first by checking your toilet’s “plumb” first before digging into any other possible causes. Thirdly, it might just need a plumber who knows how to adjust toilets and bring them down to their original height again with minimal disruption. 

How do you fix a toilet flange that is too high?

Remove the toilet, clean off the wax sealant and apply a new one (tape in three places). 

Put everything back together and make sure it’s level. Sometimes, simply removing the bolts and slipping the flange down is enough to cure problems. 

If not then cut some wood spacers of around 1-inch thick height from lumber scraps or from old deck boards. 

Position them at both ends under the toilet-mounting bolts, fill gaps with silicone caulk, tighten bolts securely before adding adhesive to bolt heads on top side of mounting area. 

This will compress materials under about a half inch depth over a wider surface mesh so that they can’t slip out sideways while you do this step–which is very important.

Can toilet flange be higher than floor?

Yes, toilet flange height should always be within five inches of the floor.

If your house’s plumbing system is new then toilet flange position on the floor may not matter. If you are replacing an older toilet with a newer, taller one then that can actually cause some problems. The force of gravity on the water flowing through pipes creates what plumbers call “positive pressure.” Gravity does more than just pull water down – it pushes it too! If there is a vent pipe leading from the toilet to outside, right above where fresh water flows into the bowl from under-sink pipes feeding into it, there will be a build-up of positive pressure causing overflow from drains and cracks in fixtures or fittings if not adjusted well.

How long should toilet flange screws be?

The screw should be long enough to penetrate the wax seal, sink flange and toilet bowl by at least 3/8 inch; but not so long that it protrudes when tightened. The word “screw” in this context is not meant literally – the bolt has a square drive with internal threads so it will take any length bolt you can buy at your hardware store. If you are not sure about the condition of your flange, ask for help at your hardware store or an experienced plumber before taking action on your own.

What toilet seal do plumbers recommend?

The best toilet seals on the market today are wax rings. They’re easy to use and install, and they stay in place better than any other type of toilet seal. But you can also find molded seals made from many different materials–these are usually custom-fit to your particular toilet model, which is great if you have a unique fixture or odd shape. As for porcelain donuts–you should never need one.

Porcelain donuts are designed mainly for two purposes: to protect the pipes when concrete screws penetrate through them during installation, and to serve as an insulator between the base of the toilet bowl and a ceramic tile floor. Most toilets today come with an adequate number of pipe penetrations.

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