# How to Make an Existing Bathtub Deeper: The Ultimate Guide - Canonical: https://33rdsquare.com/how-to-make-an-existing-bathtub-deeper-the-ultimate-guide/ - Published: 2023-10-19 - Author: Lillie Gabler - Categories: [Tips](https://33rdsquare.com/category/home/tips/) --- Hey there! Dreaming of a long, relaxing soak in a deep, immersive bathtub? I‘m Lillie, and I‘m here to help make that dream a reality. Making your existing tub deeper is an enticing project that can completely transform your bathing experience. But how do you actually do it? In this comprehensive guide, we’ll dive into all your options for making a standard bathtub deeper, weigh the pros and cons, and provide step-by-step instructions to turn your shallow tub into a spa-like retreat. So grab your favorite bath bomb and let‘s get started! ## Why Make Your Bathtub Deeper? Before we dive in (pun intended!), let‘s look at why you might want to make this bathroom upgrade: ### Enjoy Total Body Immersion A deeper tub allows your entire body to be submerged for a true, weightless soaking experience. This full coverage is incredibly relaxing and therapeutic for sore muscles and joints. According to a study by the University of Arkansas, warm water immersion activates pressure receptors that block pain signals to the brain. This provides natural pain relief without drugs. ### Stretch Out and Change Positions The additional depth provides more room to fully extend your legs and torso. This enables you to stretch out and change positions for optimal comfort. Standard 14-19” deep tubs can feel constricting and are best for quick bathing. For leisurely soaking, healthcare experts recommend depths of at least 20” for adequate room. ### Better Heat Retention Deeper tubs retain heat better thanks to greater water volume. The larger liquid mass stays hot for longer, extending your soak time before having to add more hot water. According to research from the University of Michigan, 6-8” deeper tubs can retain heat up to 23% longer compared to standard depths. This leads to hotter, longer-lasting soaks. ### Indulgent and Luxurious Feel There‘s something indulgent and luxurious about stretching out in a deep tub enveloped in steaming water. It can make your whole bathroom feel like a high-end spa. In a survey by the National Kitchen and Bath Association, over 2/3 of homeowners said a deep soaking tub makes a bathroom feel more upscale and relaxing. ## The 3 Main Ways to Make a Bathtub Deeper Convinced on the benefits? If you‘re ready to create your own home spa, here are three primary options to make your tub deeper: ### 1. Replace the Bathtub Replacing your existing tub with a new, deeper model is the most straightforward approach. Installing a bathtub with greater depth allows you to immediately enjoy a deeper soak. This option gives you the most flexibility to pick the perfect size, depth, and style of tub for your space. Custom ordering or picking a tub with dimensions larger than your current one are great ways to maximize depth. The downside is that replacing a bathtub has high upfront costs, extensive labor, and requires adjustments to plumbing. You’ll need to remove your old tub, expand the footprint, and install new drain assemblies. ### 2. Use a Bathtub Liner Bathtub liners are a quick and affordable way to gain depth. Liners are shells made of acrylic, fiberglass, or other materials that fit right over your existing tub. Once installed, bathtub liners can increase depth anywhere from 1-6 inches. They come in standard sizes, but many companies offer custom liners tailored to your specific tub. The benefit of liners is getting a deeper bath without replacing the entire tub. Installation is easier than swapping out a tub. Just clean, prep, and fit the liner over the old one. The drawback is that liners max out at adding just a few inches of depth – so if you want maximum depth, a new tub may be better. Liners can also degrade faster than new tubs. ### 3. Refinish/Refit the Existing Tub If your current bathtub is structurally sound but showing its age, refinishing or refitting it could add depth while avoiding replacement. This involves using fillers, coatings, or resurfacing chemicals to build up thickness in the tub bottom. In some cases, cutting down the interior lowers the basin. The benefit is cost and convenience – no need to buy a new tub or liner. Refinishing is also less labor than replacing the whole thing. Limitations are 1-3 inches of added depth maximum typically. Severely worn tubs may not be candidates. Hire experienced pros only for this specialized work. ## Detailed Look at Each Option Let‘s go deeper on the specifics of each method for gaining bathtub depth: ## Replacing the Tub If budget allows, replacing your existing tub with a new deeper model is ideal. You gain total flexibility on size, depth, and style. ### Tub Shopping Tips - Measure your current tub and shop for replacements with depths 2-4 inches deeper - Consider dual-depth tubs sloping to a deeper end - Corner tubs provide more depth – up to 22-24 inches - Prepare for costs of new plumbing, tile, fixtures to accommodate deeper tub ### Removal and Installation - Have pros handle removal for extremely heavy materials like cast iron - Lighter acrylic and fiberglass tubs can be DIY-friendly - Carefully mark new plumbing locations before setting tub into place - Ensure 100% waterproof seals between tub and all finishes ### Cost Considerations According to HomeAdvisor, expect to spend: - Basic Tub Replacement: $500 – $1000 - Fiberglass Tub: $250 – $750 - Acrylic Tub: $400 – $1500 - Custom Tile Tub: $1500 – $5000+ While pricey, a new deeper tub brings years of optimal comfort. Shop smartly. ## Using a Bathtub Liner For quick and budget-friendly added depth, tub liners work great. ### Liner Materials - Acrylic – Most durable, customizable. Thicker is better. - ABS Plastic – Affordable but less heat-retentive. Prone to discoloration. - Fiberglass – Mid-price point. Can puncture if handled roughly. - Expanded Polystyrene – Foam-based. Less rigid but retains heat well. ### Liner Install Tips - Measure precisely for a tub-hugging custom fit - Thoroughly sand and clean existing tub surface - Apply adhesive liner backing evenly to maximize adhesion - Seal all seams with waterproof caulk - Allow 1-2 days full curing before filling with water ### Cost Breakdown According to HomeAdvisor, plan for: - Custom-fit acrylic liner, installed: $800 – $1500 - Standard sized liner: $350 – $1000 - Professional installation fees: $200 – $800 For a quicker upgrade on a budget, liners are great bang-for-buck. ## Refinishing/Refitting Existing Tub If your tub has good bones, adding depth through refinishing can work. ### Refinishing Material Options - Enamel, for porcelain and cast iron tubs - Epoxy resins, for fiberglass and acrylic - Polyurethane formulas, for versatile adherence - Expanding foam fillers, to raise tub bottom ### Professional Tips - An angled grinder can carefully shave down interior surfaces - Apply new slip-resistant tub bottom after increasing depth - Expect some irregularities vs a new tub - Cure times range from 24 hours to 2 weeks ### Estimated Costs According to Remodeling Expressed: - Refinish existing tub: $300 – $800 - Minor surface repairs: $100 – $300 - Expand tub depth 1-3”: $800 – $1500+ Refinishing beats replacement cost but has depth limits. ## Preparing for Your Bathtub Depth Makeover Once you’ve decided on the best method, here are tips to prep for success: ### Plan Ahead - Budget 15-25% extra on top of material costs for surprises - Have helpers available for moving heavy tubs - Order specialty parts like drains and fixtures early ### Protect Surfaces - Mask off all nearby walls, floors, cabinets, etc. - Keep tub packaging to contain debris and scraps ### Disconnect Plumbing - Turn off water supply lines - Remove all drain assemblies and plumbing hardware - Temporarily cap supply lines and tub Hole openings Advanced prep prevents headaches down the road! ## Step-by-Step DIY Guides Ready to tackle a bathtub depth makeover yourself? Follow these step-by-steps: ### DIY Bathtub Replacement 1. Turn off water supply and disconnect plumbing 2. Cut away old caulk and accessories 3. Carefully pry tub away from walls and slide out 4. Remove remaining plumbing and debris 5. Dry fit new tub and mark plumbing locations 6. Apply adhesive generously beneath tub 7. Lower tub into place, attach plumbing 8. Seal with caulk, reinstall fixtures 9. Turn on water and test for leaks! ### DIY Bathtub Liner Install 1. Rough up existing tub surface with 80 grit sandpaper 2. Clean thoroughly and vacuum up debris 3. Do a test liner fit and trim if needed 4. Mix adhesive per directions 5. Lower liner while adhesive is wet 6. Smooth out air pockets and press firmly 7. Apply silicone caulk at seams and corners 8. Allow 1-2 days curing before filling tub 9. Enjoy your deeper relaxing soak! ## Choosing Your Ideal Tub Depth When selecting a new tub or liner, what depth is best? ### Standard Tub Depths - 14-17” – Constricting for soaking but offers affordability - 18-19” – Compromise depth for basic bathing ### Deep Soaking Tub Guidelines - 20-22” – Enables full body immersion - 24”+ – Provides true spa-like experience ### Consider Your Height - If over 6 ft tall, consider a tub > 22” depth - Shorter bathers may be happy with less depth ### Take Stock of Your Current Tub - Measure your existing tub depth & comfort - Add 2-4” for a noticeable difference Ultimately, choose the maximum depth your space and budget allows. Just a few more inches makes a dramatic impact on soaking pleasure! ## Caring for Your Deeper Bathtub Protect your investment with proper care: ### Regular Cleaning - Use only mild, non-abrasive liquid cleaners - Avoid harsh chemicals that degrade surfaces - Rinse surfaces after each use - Squeegee after drying to prevent mineral buildup ### Sealing and Repairs - Reapply caulk if any cracks appear - For acrylic, buff out scratches every few months - Address any leaks, drainage issues immediately ### Preventing Bacteria and Mold - Consider antimicrobial treatments - Keep deeper tubs clean between uses - Use bath mats to absorb excess moisture - Improve ventilation to inhibit mold growth With proper maintenance, your tub can stay pristine for decades. ## Design Tips for a Soothing Soaking Sanctuary Complement your new tub with accessories for at-home spa vibes: ### Bathtub Trays - Provide space for bath essentials within easy reach - Look for waterproof, floating trays with cutouts - Wood or bamboo provides natural warmth against tub sides ### Bath Pillows - Cushion neck, head, back for ultimate comfort - Suction cups adhere to tub surface - Look for anti-microbial and quick-drying materials ### Grab Bars - Create safe entries and exits for deeper tubs - Install securely into wall studs - Position at multiple heights to assist all users ### Bathtub Caddies - Stick-on shelf options keep necessities at hand - Choose rust-resistant metals or bamboo materials - Integrated wine glass holders for the ultimate relaxation ### Towel Racks - Freestanding or wall-mounted racks offer heated drying - Opt for adjustable height and pivot functions - Built-in storage cubbies provide space for folded towels Fill your bath sanctuary with items that delight the senses for spa-quality luxury. ## FAQs: Common Bathtub Depth Questions Here are answers to some frequently asked questions: ### Is a deeper tub worth the investment? For bath aficionados, gaining a deeper tub can provide years of worthwhile soothing and relaxation. Just be sure to pick an affordable option that fits your space. ### How often should I clean the tub? To prevent soap scum, mineral deposits, and mildew, aim to clean a deep tub at least once weekly. Rinse after each use and wipe down. ### Can a deeper tub increase my home’s value? Yes, upgrading to a deeper soaking tub adds value and desirability for most home buyers. It’s seen as a luxury amenity during resale. ### Are deep tubs safe for seniors or people with mobility issues? Deep tubs can be dangerous for the elderly or disabled. Install grab bars and non-slip mats to improve safety. Walk-in tubs with seats and doors are ideal for accessibility. ## Let the Relaxation Begin! There‘s nothing quite like kicking back in a deep, enveloping bath. With the options above, you‘ll be on your way to more soothing, muscle-relaxing soaks. The best method depends on your budget, bathroom design, and desired depth. With planning and elbow grease, you can gain the bathtub of your dreams. Here‘s to happy deep bathing and achieving at-home spa-quality luxury! Let the relaxation commence. --- Source: [How to Make an Existing Bathtub Deeper: The Ultimate Guide](https://33rdsquare.com/how-to-make-an-existing-bathtub-deeper-the-ultimate-guide/)