We’ll discuss how to build a frame for a drop-in tub.

Whether you want to construct a long, small, medium, or large drop, you’ll see how to go about it. Without any delay, let’s get into specifics.

Framing For Drop-In Bathtub

Building support for a drop in your tub can be an exciting project. It will let you install the tub smoothing and make it look beautiful.

However, embarking on such a project yourself can be challenging. Most drop-in bathtub frames support thousands of pounds at maximum capacity.

The project requires proper research, planning, precision, and patience.

If you want to perform a DIY project, you’ll need to read this post.

Drop-in Bathtub Framing Process

As highlighted above, the frame for a drop-in tub gives the most firmness and solidity.

Whatever size tub you install, you’ll need a structure around it. Here are some steps to construct a support for a drop-in tub:

  • Drop-In Tub Framing Dimensions

The first thing to do is calculate the height of your tub and set it on the wall. You can add 3 to 3.5 inches for the height across the floors and the tub.

Taking the essential measurements will help you determine the dimension of the support. Additionally, you’ll know the exact size of wood you want and how it’ll be installed.

However, you must ensure the tub is on hand before building the support. That’s because distinct vendors use slightly distinctive dimensions.

This dimension varies in terms of width, lip width, and style.

  • Install Noggins

Installing noggins across the joists and wall is essential. It will provide extra support for the frame. Plus, it helps hold the outer linings.

So after taking out your dimensions, you nail the noggins using a hammer. You can also complete the job using a Porter cable nail gun.

  • Determine the Size of the Tub and Cut the Framework

A drop-in bathtub usually requires about 6 inches of flat area on both sides.

But if you don’t have this much space, don’t bother. You are to estimate the height and diameter of the tub and add 70 mm.

Next, you cut timbers for the upper and base sides of the support. This will help set the tub absolutely in the framework.

  • Identify the Vertical Studs on the Support

Now, you’re to trace the offcut of the frame and mark the position of the vertical studs.

You can do that by placing the vertical studs at each end of the frame. Leave a space of about 600 mm between the studs. This will be helpful when you want to cover the frame.

  • Couple All Sides of the Frame

When you’re done marking the position of the vertical studs, you should cut them into eight pieces. Each vertical stud should measure 95 mm less than the desired height of the frame.

Doing so will allow the thickness of the top and bottom to be balanced. But if there’s a variation in the floor, you can add an extra 5 mm.

Next, you nail the studs between the top and bottom plates and assemble the two sides of the frame.

  • Move into Installation

Now, it’s time to install the two sides of the frame. To do that, position one side against the wall and the other parallel to it. Ensure the distance between both sides is based on the tub’s width. However, you’ll need to subtract 15 mm on both sides.

Doing so will help the tub rest on the frame and be appropriately positioned. Once you accurately position the frame, you can nail it into place.

  • Trim the Ends of the Frame

After mounting the frame, measure the distance between the sides at the end. Then you cut the top and bottom of both sides and three vertical studs for each end.

Next, you nail the studs between the top and bottom plates. Finally, nail the ends and use a spirit level. That is if the vertical edges are in the proper position.

Place the drop-in tub and ensure it fits properly on all four edges.

Things You’ll Need to Do Before Building a Frame for a Drop-in Bathtub

Specific tools will be needed when building a frame for a drop-in bathtub. They include a jigsaw, measuring tape, chalk or pencil, a circular saw, a power drill, and paper.

You may also require a tube of silicone or pot of wood glue, a box of no. 9, ½ inch Philip’s head screws, a hammer, gloves, and goggles.

Is It Necessary to Build a Frame for a Drop in Bathtub?

The answer is yes. There are many reasons you’ll need such support.

First, it will support your tub and keep it stable, strong, and level. It’s also an excellent way to hold the bath in place. While some baths have a custom frame, others must be designed manually.

If you want to design a frame for your drop-in bathtub, ensure it’s durable. Additionally, construct a frame with durable and high-quality materials.

You can consider using materials like hardwood, steel, or even metal.

Space Needed for a Drop-in Bathtub

The space needed to install a drop-in bathtub or its frame depends on the overall size of your bathroom. In addition to that, it also depends on the type of tub you want to install.

But generally, drop-in bathtubs are suitable for bathrooms with larger spaces. You can install it anywhere in the middle of your bathroom space.

However, long drop-in tubs have the following measurements: 20 inches deep, 30 inches wide, and 72 inches long. Medium drop-in tubes are 16 inches deep, 30 inches wide, and 60 inches long.

Then small drop-in tubs come 14 inches deep, 30 inches wide, and 45 inches long.

When installing each tub, leaving an additional 6 inches of flat area on all edges is best. This will make the adjacent area one foot farther and more comprehensive than the tub.

As mentioned, creating support for a drop-in tub comes with a few perks. The most obvious is that it gives rigidity and makes the top heavyweight.

However, making a frame for your drop-in tub may require something other than pro carpentry skills. However, you’ll need to know the basics about it.

To help with that, we’ve highlighted the steps to making an outstanding frame.

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