How MULTTI Handles Material Purchasing for Bathroom & Flooring Renovations

TRANSPARENCY ALL THE WAY

One of the biggest concerns homeowners have during a renovation is material cost transparency.
Questions like “Am I overpaying?”, “Who controls the purchases?”, and “What exactly am I paying for?” are common — and completely valid.

At MULTTI Construction, we believe material purchasing should be clear, documented, and fair. That’s why we follow a structured, no-markup approach and provide full visibility into what goes into your bathroom or flooring renovation.

This article explains how we handle materials, using a real bathroom renovation example, so you know exactly what to expect.

What “Materials” Really Mean in a Bathroom Renovation

Every project will have it’s list of material during the estimate process. A full, transparent and honest list will be submitted with the scope of work so the homeowner can approve and decide which material/brand he wants to go with.

We always follow the homeowners guideline, and will work with customers budget to help the decisions of what type of material fits better for their renovation.

When most people think of materials, they think of tile, fixtures, and paint.
In reality, a bathroom renovation requires much more than finishes.

Materials fall into several critical categories, and vary for each project, whether it’s include plumbing/electrical changes and etc. But so for you to have an idea of what your list might show, here it’s what we plan for:

  • Protection & site preparation

  • Framing and structural prep

  • Plumbing rough-in components

  • Waterproofing systems

  • Tile installation materials

  • Electrical components

  • Finishing and detailing supplies

Each category plays a role in the durability, safety, and longevity of the bathroom — even if it’s hidden behind walls.

Protection & Preparation Materials (Before Work Even Starts)

Before demolition begins, we protect your home and prepare the workspace.

This includes items like:

  • Plastic sheeting and floor protection

  • Painter’s tape and protective coverings

  • Heavy-duty trash bags for debris management

These materials protect adjacent rooms, flooring, and access paths — a step that’s often skipped by low-quality contractors but critical to maintaining a clean job site.

Plumbing & Structural Materials (Behind the Walls)

Adding or upgrading a shower requires proper plumbing and structural preparation.

Materials in this category include:

  • Framing lumber and treated bottom plates

  • Fire block foam and stud guards

  • Shower drains, P-traps, PVC piping, and fittings

  • PEX tubing and fittings

  • Pressure-balance shower valve and trim

  • Toilet flange, wax ring, and hardware

These components are not optional — they ensure code compliance, safety, and long-term performance.

Waterproofing System (One of the Most Important Investments)

Tile itself is not waterproof — the system behind it is.

That’s why we include:

  • Foam shower pan (cut-to-fit)

  • Foam curb

  • Waterproofing membrane kit

  • Drain waterproofing collar

  • Seam tape and compatible thinset

This creates a fully integrated waterproof shower system, designed to protect your home from moisture damage for the long term.

Tile & Surface Installation Materials

Installing tile correctly requires more than tile alone.

Supporting materials include:

  • Cement board and moisture-resistant drywall

  • Alkali-resistant mesh tape

  • Thinset, grout, spacers, and edge trims

  • Silicone and sealants

For this example bathroom, materials include:

  • Wall tile

  • Mosaic tile for shower floor

  • Bathroom floor tile

  • Transition strips and finishing profiles

These components ensure proper adhesion, alignment, expansion control, and clean detailing.

Electrical & Lighting Support Materials

Even small bathroom updates may require:

  • GFCI receptacles

  • Electrical wiring

  • Switches and connectors

These materials support safety upgrades and code compliance where needed.

Painting & Finish Materials

The final look depends on:

  • Primer and moisture-resistant paint

  • Caulking

  • Sandpaper and finishing supplies

  • Baseboards and trim

These details complete the space and protect surfaces from humidity.

What makes MULTTI different:

  • No markup on materials

  • Materials are billed at actual cost

  • Receipts are provided upon request

  • Customers can access receipts online once approved

  • Material pricing reflects market prices at time of estimate

If, after all purchases:

  • Materials cost less than estimated → the difference is applied toward labor

  • Materials cost more due to market fluctuation → the difference is transparently applied

No hidden fees. No inflated invoices.

Helping You Choose the Right Materials — With 3D Visualization

Choosing materials can feel overwhelming. That’s why MULTTI doesn’t just hand you a list — we guide you.

We help homeowners:

  • Choose the right tile for each bathroom area

  • Select mosaics, layouts, and finishes that work together

  • Coordinate fixtures and colors

  • Avoid materials that don’t perform well in wet zones

To make decisions easier, we provide 3D renderings showing:

  • Tile options

  • Layouts and patterns

  • Fixture finishes

  • Overall design combinations

This allows you to see your bathroom before materials are purchased — reducing mistakes and regret.

Material Guidance for Hardwood Flooring Projects

The same transparency applies to flooring projects.

For hardwood flooring, we help you choose:

  • The right wood species for your lifestyle

  • Solid vs engineered hardwood (important in Florida)

  • Proper plank size and layout

  • Finish type based on wear and maintenance expectations

We also plan underlayment, moisture barriers, and installation details before purchasing materials — ensuring performance, not just appearance.

Why This Matters to Homeowners

By managing materials this way, MULTTI ensures:

  • No surprise charges

  • No rushed decisions

  • No unnecessary upgrades

  • No corner-cutting behind walls

You know exactly what you’re paying for — and why.

Ready to Start Your Renovation?

Material choices define the success of a renovation. With proper planning, transparency, and design support, the process becomes clear and stress-free.

Start Your Renovation with MULTTI Construction and let our team guide you through material selection, purchasing, and installation with confidence and integrity.

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MAILTON SOUZA

Project Manager for home renovations in Central Florida.

https://www.multticonstruction.com/
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Plumbing During a Bathroom Renovation: What Homeowners Need to Know