Skip to content

How to Install a Bathtub Without Access Underneath

To install a bathtub without access underneath, you will need to use the following steps: 1. Make sure all measurements are correct before purchasing your new tub. This will ensure that it fits in place correctly and there won’t be any issues when installing it.

2. Remove the old bathtub by cutting out around its perimeter with an angle grinder or reciprocating saw. Disconnect any plumbing connected to it and remove any debris left behind in preparation for installation of the new one. 3. Construct a wooden frame if needed to raise the tub up off the floor so that you can slide it into position more easily, then secure this against the wall studs with screws and masonry anchors as necessary for added strength and stability.

4. Place your new bathtub onto the wooden frame or directly on top of your existing flooring depending on what is most suitable for your bathroom space, then carefully manoeuvre it into position making sure not to damage anything else in its vicinity during transit (elevators etc). 5 . Securely attach all plumbing connections according to manufacturer instructions, such as shower head/handles etc., then fill up with water testing that everything is working properly before using fully (turn on taps etc.).

  • Step 1: Gather the Necessary Supplies – You will need a bathtub, caulking supplies, screws and washers, grout sealer, tile adhesive or mortar mix, a sawzall or jigsaw with metal blades, power drill with screwdriver bit and masonry bits
  • Step 2: Measure the Area – Using a tape measure and level tool to get accurate measurements of the area where you plan to install your tub
  • If there is no access underneath then it will be necessary to work from above; this may mean cutting through flooring in order to create an opening for installation
  • Step 3: Cut Through Flooring if Necessary – Use a sawzall or jigsaw with metal blades to cut through any existing flooring material such as vinyl tiles or hardwood floors that are blocking access beneath your tub
  • This step can be skipped if there is already an open space beneath the tub’s intended location
  • Step 4: Secure Tub in Place – Drill holes into wall studs using masonry bits and secure tub using screws and washers
  • Make sure all connections are tight enough so that they won’t come loose over time due to movement of water when showering or bathing inside the tub itself
  • Step 5: Apply Caulking Around Edges of Tub – Once installed use caulk around edges of bathtub walls where they meet up with floors/walls in order for water not seep into surrounding areas during use (this also prevents mold growth)
  • Step 6 : Add Tile Adhesive or Mortar Mix- Spread out a thin layer of either tile adhesive/mortar mix at base of bathtub before setting tiles on top; this ensures proper adhesion between materials which prevents them from shifting overtime due to moisture buildup within bathroom environment (as well as allowing better insulation properties)
  • Be sure not too apply too much adhesive/mortar mix since doing so can cause tiles become uneven once dried leading issues later down line when trying clean surface underneath them properly without damaging anything else nearby!
How to Install a Bathtub Without Access Underneath


Does a Bathtub Need Support Underneath?

Yes, a bathtub needs support underneath for the safety and security of you and your family. Bathtubs are heavy objects that need to be securely supported in order to prevent them from tipping or shifting during use. Without proper support, the tub could become unstable over time due to weight shifts or water leaks which can lead to serious injury.

Properly supporting a bathtub is essential as it will protect both its structural integrity and also protect against any potential leaking issues associated with an unsupported tub. This process involves installing blocking between the floor joists beneath the bathroom flooring where the tub will sit as well as adding appropriate supports at each end of the bathtub itself such as 2x4s cut slightly longer than the width of your tub along with lag bolts drilled through those boards into studs behind walls. Additionally, make sure there is adequate ventilation below your bathtub so that moisture buildup doesn’t occur which could cause damage over time.

Finally, check regularly for signs of wear or movement in order to ensure that your bathtub remains properly supported at all times!

How Do You Support the Bottom of a Bathtub?

If you’re looking to install a new bathtub, one of the most important steps is making sure that it has proper support. This means having the correct support material beneath the bottom of your tub so it can be safely and securely held up by an even weight distribution. To do this, you will need some form of subflooring such as plywood or OSB board that is cut to fit snugly around the base perimeter of your tub.

In addition, use appropriate joist hangers and screws to fasten them into place for extra reinforcement if needed. If installing on concrete, make sure you use expansion anchors and washers in order to secure each corner properly against any potential water damage or shifting over time. It’s also important to add a layer of cementboard or waterproof membrane between the flooring and subflooring before finally laying down tile or other surfacing material; this helps prevent moisture from seeping through in case there are any cracks in either surface while also providing additional insulation benefits.

Finally, be sure not to forget about caulking along all four sides where your tub meets its walls – this ensures that no water will ever enter those crevices!

Do All Tubs Have Access Panel?

No, not all tubs have access panels. Access panels are typically found in alcove and drop-in bathtubs that require the user to get into the tub from outside of it. Alcove tubs usually feature a 3 or 4 sided panel on one side of the interior, while drop-in models may also come with an access panel placed at the bottom of the unit.

This type of feature is designed specifically for maintenance purposes, allowing plumbers and technicians easy access to pipes and other components inside without having to remove parts of your walls or floors. If you own a freestanding model however, then this specific amenity will be missing as these units usually don’t contain any kind of access panel due to their non-structural design.

How Do You Secure a Bathtub to the Wall?

Securing a bathtub to the wall is an important step in ensuring that your bathroom has a safe and secure foundation. Fortunately, there are several options for doing so. The first option is to use toggle bolts or molly screws.

Toggle bolts are ideal for drywall as they distribute weight across several points of contact, while molly screws can be used on any type of wall material, including plaster and tile. If you’re dealing with plaster walls, you may also want to consider using plastic anchors – these provide additional support by locking into the pores of the plaster surface. For tile installations, ceramic anchors should be used instead; these have an extra-wide base that helps them remain more secure even when exposed to moisture over time.

Finally, if your tub uses metal feet or legs as supports rather than direct-to-wall mounting hardware (which most modern tubs do), then it’s best to use heavy duty lag screws in combination with washers and lock nuts that will provide greater overall stability and security against movement during normal usage.

How to Replace a Bathtub (Step By Step)

How to Install a Bathtub on Concrete Floor

Installing a bathtub on a concrete floor can be an intimidating task, but with the right tools and materials it can actually be quite simple. The first step is to measure the area where you would like your bathtub to go and ensure that there is enough room for it. After measurements are taken, use a drill and masonry bit to create holes in the concrete so that you can anchor the tub in place.

Once all of your holes are drilled, insert wall anchors into each hole before placing the tub onto them and fastening with nuts and bolts. Finally, seal the edges of your new installation using caulk or grout for extra protection against water damage.

How to Install Tub in Basement Without Breaking Concrete

Installing a tub in the basement of your home can be a tricky task, but it doesn’t have to be impossible. With some careful planning and preparation, you can install a tub in your basement without breaking any concrete. Start by measuring the space of where the tub will go and then cut out an opening for the drain pipe using a drill or saw.

Next, place wood planks on top of the concrete flooring to create even footing for the new bathtub. Lastly, use caulking around all joints and sealant along with screws to secure it into place. Following these steps should help you successfully install a new bathroom fixture without damaging existing concrete structures!

No Access to Bathtub Plumbing

If you don’t have access to bathtub plumbing, it can be difficult to enjoy the luxury of taking a hot bath. However, there are still several ways that you can get your relaxation fix without needing access to a tub’s plumbing system. Portable showers and foot baths are great alternatives if you need an area to clean yourself up but don’t have access to traditional bathing facilities.

You could also use relaxing bubble baths or essential oil baths in a large bowl or basin filled with warm water — this is especially helpful for those who live in small apartments and need an affordable solution for self-care!

How to Install a Fiberglass Tub on Concrete Floor

Installing a fiberglass tub on a concrete floor is not as difficult as it may seem. First, you’ll need to measure the area where the tub will go and mark out the proper space for installation. Next, use mortar to attach plastic anchors into the holes drilled in each corner of the concrete floor.

Place foam insulation between the tub and its surrounding walls before securing it with adhesive caulk. Finally, connect water lines according to local codes and turn on your faucet to test for any leaks or other issues that could arise from installation.


Installing a bathtub without access underneath can be challenging, but with the right tools and instructions, it is definitely possible. With careful planning and patience, you can successfully install a new bathtub in your bathroom in no time. Remember to use proper safety precautions when working with electricity and plumbing systems, as well as enlisting professional help if needed.

By following these steps, you will be able to enjoy your new bathtub for years to come!